diff --git a/views/view.h b/views/view.h
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+++ b/views/view.h
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+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef VIEWS_VIEW_H_
+#define VIEWS_VIEW_H_
+
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
+#include <atlbase.h>
+#include <atlapp.h>
+#include <atlmisc.h>
+#endif  // defined(OS_WIN)
+
+#include <algorithm>
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/gfx/rect.h"
+#include "base/scoped_ptr.h"
+#include "chrome/common/accessibility_types.h"
+#include "views/accelerator.h"
+#include "views/background.h"
+#include "views/border.h"
+
+namespace gfx {
+class Insets;
+class Path;
+}
+
+class ChromeCanvas;
+class OSExchangeData;
+class ViewAccessibilityWrapper;
+
+namespace views {
+
+class Background;
+class Border;
+class FocusManager;
+class FocusTraversable;
+class LayoutManager;
+class RestoreFocusTask;
+class RootView;
+class ScrollView;
+class Widget;
+class Window;
+
+// ContextMenuController is responsible for showing the context menu for a
+// View. To use a ContextMenuController invoke SetContextMenuController on a
+// View. When the appropriate user gesture occurs ShowContextMenu is invoked
+// on the ContextMenuController.
+//
+// Setting a ContextMenuController on a view makes the view process mouse
+// events.
+//
+// It is up to subclasses that do their own mouse processing to invoke
+// the appropriate ContextMenuController method, typically by invoking super's
+// implementation for mouse processing.
+//
+class ContextMenuController {
+ public:
+  // Invoked to show the context menu for the source view. If is_mouse_gesture
+  // is true, the x/y coordinate are the location of the mouse. If
+  // is_mouse_gesture is false, this method was not invoked by a mouse gesture
+  // and x/y is the recommended location to show the menu at.
+  //
+  // x/y is in screen coordinates.
+  virtual void ShowContextMenu(View* source,
+                               int x,
+                               int y,
+                               bool is_mouse_gesture) = 0;
+};
+
+// DragController is responsible for writing drag data for a view, as well as
+// supplying the supported drag operations. Use DragController if you don't
+// want to subclass.
+
+class DragController {
+ public:
+  // Writes the data for the drag.
+  virtual void WriteDragData(View* sender,
+                             int press_x,
+                             int press_y,
+                             OSExchangeData* data) = 0;
+
+  // Returns the supported drag operations (see DragDropTypes for possible
+  // values). A drag is only started if this returns a non-zero value.
+  virtual int GetDragOperations(View* sender, int x, int y) = 0;
+};
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// View class
+//
+//   A View is a rectangle within the views View hierarchy. It is the base
+//   class for all Views.
+//
+//   A View is a container of other Views (there is no such thing as a Leaf
+//   View - makes code simpler, reduces type conversion headaches, design
+//   mistakes etc)
+//
+//   The View contains basic properties for sizing (bounds), layout (flex,
+//   orientation, etc), painting of children and event dispatch.
+//
+//   The View also uses a simple Box Layout Manager similar to XUL's
+//   SprocketLayout system. Alternative Layout Managers implementing the
+//   LayoutManager interface can be used to lay out children if required.
+//
+//   It is up to the subclass to implement Painting and storage of subclass -
+//   specific properties and functionality.
+//
+/////////////////////////////////////////////////////////////////////////////
+class View : public AcceleratorTarget {
+ public:
+
+  // Used in EnumerateFloatingViews() to specify which floating view to
+  // retrieve.
+  enum FloatingViewPosition {
+    FIRST = 0,
+    NEXT,
+    PREVIOUS,
+    LAST,
+    CURRENT
+  };
+
+  // Used in the versions of GetBounds() and x() that take a transformation
+  // parameter in order to determine whether or not to take into account the
+  // mirroring setting of the View when returning bounds positions.
+  enum PositionMirroringSettings {
+    IGNORE_MIRRORING_TRANSFORMATION = 0,
+    APPLY_MIRRORING_TRANSFORMATION
+  };
+
+  // The view class name.
+  static char kViewClassName[];
+
+  View();
+  virtual ~View();
+
+  // Sizing functions
+
+  // Get the bounds of the View, relative to the parent. Essentially, this
+  // function returns the bounds_ rectangle.
+  //
+  // This is the function subclasses should use whenever they need to obtain
+  // the bounds of one of their child views (for example, when implementing
+  // View::Layout()).
+  // TODO(beng): Convert |bounds_| to a gfx::Rect.
+  gfx::Rect bounds() const { return bounds_; }
+
+  // Get the size of the View.
+  gfx::Size size() const { return bounds_.size(); }
+
+  // Return the bounds of the View, relative to the parent. If
+  // |settings| is IGNORE_MIRRORING_TRANSFORMATION, the function returns the
+  // bounds_ rectangle. If |settings| is APPLY_MIRRORING_SETTINGS AND the
+  // parent View is using a right-to-left UI layout, then the function returns
+  // a shifted version of the bounds_ rectangle that represents the mirrored
+  // View bounds.
+  //
+  // NOTE: in the vast majority of the cases, the mirroring implementation is
+  //       transparent to the View subclasses and therefore you should use the
+  //       version of GetBounds() which does not take a transformation settings
+  //       parameter.
+  gfx::Rect GetBounds(PositionMirroringSettings settings) const;
+
+  // Set the bounds in the parent's coordinate system.
+  void SetBounds(const gfx::Rect& bounds);
+  void SetBounds(int x, int y, int width, int height) {
+    SetBounds(gfx::Rect(x, y, std::max(0, width), std::max(0, height)));
+  }
+  void SetX(int x) { SetBounds(x, y(), width(), height()); }
+  void SetY(int y) { SetBounds(x(), y, width(), height()); }
+
+  // Returns the left coordinate of the View, relative to the parent View,
+  // which is the value of bounds_.x().
+  //
+  // This is the function subclasses should use whenever they need to obtain
+  // the left position of one of their child views (for example, when
+  // implementing View::Layout()).
+  // This is equivalent to GetX(IGNORE_MIRRORING_TRANSFORMATION), but
+  // inlinable.
+  int x() const { return bounds_.x(); }
+  int y() const { return bounds_.y(); }
+  int width() const { return bounds_.width(); }
+  int height() const { return bounds_.height(); }
+
+  // Return the left coordinate of the View, relative to the parent. If
+  // |settings| is IGNORE_MIRRORING_SETTINGS, the function returns the value of
+  // bounds_.x(). If |settings| is APPLY_MIRRORING_SETTINGS AND the parent
+  // View is using a right-to-left UI layout, then the function returns the
+  // mirrored value of bounds_.x().
+  //
+  // NOTE: in the vast majority of the cases, the mirroring implementation is
+  //       transparent to the View subclasses and therefore you should use the
+  //       paremeterless version of x() when you need to get the X
+  //       coordinate of a child View.
+  int GetX(PositionMirroringSettings settings) const;
+
+  // Return this control local bounds. If include_border is true, local bounds
+  // is the rectangle {0, 0, width(), height()}, otherwise, it does not
+  // include the area where the border (if any) is painted.
+  gfx::Rect GetLocalBounds(bool include_border) const;
+
+  // Get the position of the View, relative to the parent.
+  //
+  // Note that if the parent uses right-to-left UI layout, then the mirrored
+  // position of this View is returned. Use x()/y() if you want to ignore
+  // mirroring.
+  gfx::Point GetPosition() const;
+
+  // Get the size the View would like to be, if enough space were available.
+  virtual gfx::Size GetPreferredSize();
+
+  // Convenience method that sizes this view to its preferred size.
+  void SizeToPreferredSize();
+
+  // Gets the minimum size of the view. View's implementation invokes
+  // GetPreferredSize.
+  virtual gfx::Size GetMinimumSize();
+
+  // Return the height necessary to display this view with the provided width.
+  // View's implementation returns the value from getPreferredSize.cy.
+  // Override if your View's preferred height depends upon the width (such
+  // as with Labels).
+  virtual int GetHeightForWidth(int w);
+
+  // This method is invoked when this object size or position changes.
+  // The default implementation does nothing.
+  virtual void DidChangeBounds(const gfx::Rect& previous,
+                               const gfx::Rect& current);
+
+  // Set whether the receiving view is visible. Painting is scheduled as needed
+  virtual void SetVisible(bool flag);
+
+  // Return whether a view is visible
+  virtual bool IsVisible() const { return is_visible_; }
+
+  // Return whether a view and its ancestors are visible. Returns true if the
+  // path from this view to the root view is visible.
+  virtual bool IsVisibleInRootView() const;
+
+  // Set whether this view is enabled. A disabled view does not receive keyboard
+  // or mouse inputs. If flag differs from the current value, SchedulePaint is
+  // invoked.
+  virtual void SetEnabled(bool flag);
+
+  // Returns whether the view is enabled.
+  virtual bool IsEnabled() const;
+
+  // Set whether this view is hottracked. A disabled view cannot be hottracked.
+  // If flag differs from the current value, SchedulePaint is invoked.
+  virtual void SetHotTracked(bool flag);
+
+  // Returns whether the view is hot-tracked.
+  virtual bool IsHotTracked() const { return false; }
+
+  // Returns whether the view is pushed.
+  virtual bool IsPushed() const { return false; }
+
+  // Scrolls the specified region, in this View's coordinate system, to be
+  // visible. View's implementation passes the call onto the parent View (after
+  // adjusting the coordinates). It is up to views that only show a portion of
+  // the child view, such as Viewport, to override appropriately.
+  virtual void ScrollRectToVisible(int x, int y, int width, int height);
+
+  // Layout functions
+
+  // Lay out the child Views (set their bounds based on sizing heuristics
+  // specific to the current Layout Manager)
+  virtual void Layout();
+
+  // Gets/Sets the Layout Manager used by this view to size and place its
+  // children.
+  // The LayoutManager is owned by the View and is deleted when the view is
+  // deleted, or when a new LayoutManager is installed.
+  LayoutManager* GetLayoutManager() const;
+  void SetLayoutManager(LayoutManager* layout);
+
+  // Right-to-left UI layout functions
+
+  // Indicates whether the UI layout for this view is right-to-left. The view
+  // has an RTL UI layout if RTL hasn't been disabled for the view and if the
+  // locale's language is an RTL language.
+  bool UILayoutIsRightToLeft() const;
+
+  // Enables or disables the right-to-left layout for the view. If |enable| is
+  // true, the layout will become right-to-left only if the locale's language
+  // is right-to-left.
+  //
+  // By default, right-to-left UI layout is enabled for the view and therefore
+  // this function must be called (with false as the |enable| parameter) in
+  // order to disable the right-to-left layout property for a specific instance
+  // of the view. Disabling the right-to-left UI layout is necessary in case a
+  // UI element will not appear correctly when mirrored.
+  void EnableUIMirroringForRTLLanguages(bool enable) {
+    ui_mirroring_is_enabled_for_rtl_languages_ = enable;
+  }
+
+  // This method determines whether the ChromeCanvas object passed to
+  // View::Paint() needs to be transformed such that anything drawn on the
+  // canvas object during View::Paint() is flipped horizontally.
+  //
+  // By default, this function returns false (which is the initial value of
+  // |flip_canvas_on_paint_for_rtl_ui_|). View subclasses that need to paint on
+  // a flipped ChromeCanvas when the UI layout is right-to-left need to call
+  // EnableCanvasFlippingForRTLUI().
+  bool FlipCanvasOnPaintForRTLUI() const {
+    return flip_canvas_on_paint_for_rtl_ui_ ? UILayoutIsRightToLeft() : false;
+  }
+
+  // Enables or disables flipping of the ChromeCanvas during View::Paint().
+  // Note that if canvas flipping is enabled, the canvas will be flipped only
+  // if the UI layout is right-to-left; that is, the canvas will be flipped
+  // only if UILayoutIsRightToLeft() returns true.
+  //
+  // Enabling canvas flipping is useful for leaf views that draw a bitmap that
+  // needs to be flipped horizontally when the UI layout is right-to-left
+  // (views::Button, for example). This method is helpful for such classes
+  // because their drawing logic stays the same and they can become agnostic to
+  // the UI directionality.
+  void EnableCanvasFlippingForRTLUI(bool enable) {
+    flip_canvas_on_paint_for_rtl_ui_ = enable;
+  }
+
+  // Returns the mirrored X position for the view, relative to the parent. If
+  // the parent view is not mirrored, this function returns bound_.left.
+  //
+  // UI mirroring is transparent to most View subclasses and therefore there is
+  // no need to call this routine from anywhere within your subclass
+  // implementation.
+  int MirroredX() const;
+
+  // Given a rectangle specified in this View's coordinate system, the function
+  // computes the 'left' value for the mirrored rectangle within this View. If
+  // the View's UI layout is not right-to-left, then bounds.x() is returned.
+  //
+  // UI mirroring is transparent to most View subclasses and therefore there is
+  // no need to call this routine from anywhere within your subclass
+  // implementation.
+  int MirroredLeftPointForRect(const gfx::Rect& rect) const;
+
+  // Given the X coordinate of a point inside the View, this function returns
+  // the mirrored X coordinate of the point if the View's UI layout is
+  // right-to-left. If the layout is left-to-right, the same X coordinate is
+  // returned.
+  //
+  // Following are a few examples of the values returned by this function for
+  // a View with the bounds {0, 0, 100, 100} and a right-to-left layout:
+  //
+  // MirroredXCoordinateInsideView(0) -> 100
+  // MirroredXCoordinateInsideView(20) -> 80
+  // MirroredXCoordinateInsideView(99) -> 1
+  int MirroredXCoordinateInsideView(int x) const {
+    return UILayoutIsRightToLeft() ? width() - x : x;
+  }
+
+  // Painting functions
+
+  // Mark the specified rectangle as dirty (needing repaint). If |urgent| is
+  // true, the view will be repainted when the current event processing is
+  // done. Otherwise, painting will take place as soon as possible.
+  virtual void SchedulePaint(const gfx::Rect& r, bool urgent);
+
+  // Mark the entire View's bounds as dirty. Painting will occur as soon as
+  // possible.
+  virtual void SchedulePaint();
+
+  // Convenience to schedule a paint given some ints. Painting will occur as
+  // soon as possible.
+  virtual void SchedulePaint(int x, int y, int w, int h);
+
+  // Paint the receiving view. g is prepared such as it is in
+  // receiver's coordinate system. g's state is restored after this
+  // call so your implementation can change the graphics configuration
+  //
+  // Default implementation paints the background if it is defined
+  //
+  // Override this method when implementing a new control.
+  virtual void Paint(ChromeCanvas* canvas);
+
+  // Paint the background if any. This method is called by Paint() and
+  // should rarely be invoked directly.
+  virtual void PaintBackground(ChromeCanvas* canvas);
+
+  // Paint the border if any. This method is called by Paint() and
+  // should rarely be invoked directly.
+  virtual void PaintBorder(ChromeCanvas* canvas);
+
+  // Paints the focus border (only if the view has the focus).
+  // This method is called by Paint() and should rarely be invoked directly.
+  // The default implementation paints a gray border around the view. Override
+  // it for custom focus effects.
+  virtual void PaintFocusBorder(ChromeCanvas* canvas);
+
+  // Paint this View immediately.
+  virtual void PaintNow();
+
+  // Paint a view without attaching it to this view hierarchy.
+  // Any view can be painted that way.
+  // This method set bounds, calls layout and handles clipping properly. The
+  // provided view can be attached to a parent. The parent will be saved and
+  // restored. (x, y, width, height) define the floating view bounds
+  void PaintFloatingView(ChromeCanvas* canvas, View* view,
+                         int x, int y, int w, int h);
+
+  // Tree functions
+
+  // Add a child View.
+  void AddChildView(View* v);
+
+  // Adds a child View at the specified position.
+  void AddChildView(int index, View* v);
+
+  // Get the child View at the specified index.
+  View* GetChildViewAt(int index) const;
+
+  // Remove a child view from this view. v's parent will change to NULL
+  void RemoveChildView(View *v);
+
+  // Remove all child view from this view.  If |delete_views| is true, the views
+  // are deleted, unless marked as not parent owned.
+  void RemoveAllChildViews(bool delete_views);
+
+  // Get the number of child Views.
+  int GetChildViewCount() const;
+
+  // Get the child View at the specified point.
+  virtual View* GetViewForPoint(const gfx::Point& point);
+
+  // Get the Widget that hosts this View, if any.
+  virtual Widget* GetWidget() const;
+
+  // Gets the Widget that most closely contains this View, if any.
+  virtual Window* GetWindow() const;
+
+  // Get the containing RootView
+  virtual RootView* GetRootView();
+
+  // Get the parent View
+  View* GetParent() const { return parent_; }
+
+  // Returns the index of the specified |view| in this view's children, or -1
+  // if the specified view is not a child of this view.
+  int GetChildIndex(View* v) const;
+
+  // Returns true if the specified view is a direct or indirect child of this
+  // view.
+  bool IsParentOf(View* v) const;
+
+  // Recursively descends the view tree starting at this view, and returns
+  // the first child that it encounters that has the given ID.
+  // Returns NULL if no matching child view is found.
+  virtual View* GetViewByID(int id) const;
+
+  // Sets and gets the ID for this view.  ID should be unique within the subtree
+  // that you intend to search for it.  0 is the default ID for views.
+  void SetID(int id);
+  int GetID() const;
+
+  // A group id is used to tag views which are part of the same logical group.
+  // Focus can be moved between views with the same group using the arrow keys.
+  // Groups are currently used to implement radio button mutual exclusion.
+  void SetGroup(int gid);
+  int GetGroup() const;
+
+  // If this returns true, the views from the same group can each be focused
+  // when moving focus with the Tab/Shift-Tab key.  If this returns false,
+  // only the selected view from the group (obtained with
+  // GetSelectedViewForGroup()) is focused.
+  virtual bool IsGroupFocusTraversable() const { return true; }
+
+  // Fills the provided vector with all the available views which belong to the
+  // provided group.
+  void GetViewsWithGroup(int group_id, std::vector<View*>* out);
+
+  // Return the View that is currently selected in the specified group.
+  // The default implementation simply returns the first View found for that
+  // group.
+  virtual View* GetSelectedViewForGroup(int group_id);
+
+  // Focus support
+  //
+  // Returns the view that should be selected next when pressing Tab.
+  View* GetNextFocusableView();
+
+  // Returns the view that should be selected next when pressing Shift-Tab.
+  View* GetPreviousFocusableView();
+
+  // Sets the component that should be selected next when pressing Tab, and
+  // makes the current view the precedent view of the specified one.
+  // Note that by default views are linked in the order they have been added to
+  // their container. Use this method if you want to modify the order.
+  // IMPORTANT NOTE: loops in the focus hierarchy are not supported.
+  void SetNextFocusableView(View* view);
+
+  // Return whether this view can accept the focus.
+  virtual bool IsFocusable() const;
+
+  // Sets whether this view can accept the focus.
+  // Note that this is false by default so that a view used as a container does
+  // not get the focus.
+  virtual void SetFocusable(bool focusable);
+
+  // Convenience method to retrieve the FocusManager associated with the
+  // Widget that contains this view.  This can return NULL if this view is not
+  // part of a view hierarchy with a Widget.
+  virtual FocusManager* GetFocusManager();
+
+  // Sets a keyboard accelerator for that view. When the user presses the
+  // accelerator key combination, the AcceleratorPressed method is invoked.
+  // Note that you can set multiple accelerators for a view by invoking this
+  // method several times.
+  virtual void AddAccelerator(const Accelerator& accelerator);
+
+  // Removes the specified accelerator for this view.
+  virtual void RemoveAccelerator(const Accelerator& accelerator);
+
+  // Removes all the keyboard accelerators for this view.
+  virtual void ResetAccelerators();
+
+  // Called when a keyboard accelerator is pressed.
+  // Derived classes should implement desired behavior and return true if they
+  // handled the accelerator.
+  virtual bool AcceleratorPressed(const Accelerator& accelerator) {
+    return false;
+  }
+
+  // Called on a view (if it is has focus) before an Accelerator is processed.
+  // Views that want to override an accelerator should override this method to
+  // perform the required action and return true, to indicate that the
+  // accelerator should not be processed any further.
+  virtual bool OverrideAccelerator(const Accelerator& accelerator) {
+    return false;
+  }
+
+  // Returns whether this view currently has the focus.
+  virtual bool HasFocus();
+
+  // Accessibility support
+  // TODO(klink): Move all this out to a AccessibleInfo wrapper class.
+  //
+  // Returns the MSAA default action of the current view. The string returned
+  // describes the default action that will occur when executing
+  // IAccessible::DoDefaultAction. For instance, default action of a button is
+  // 'Press'. Sets the input string appropriately, and returns true if
+  // successful.
+  virtual bool GetAccessibleDefaultAction(std::wstring* action) {
+    return false;
+  }
+
+  // Returns a string containing the mnemonic, or the keyboard shortcut, for a
+  // given control. Sets the input string appropriately, and returns true if
+  // successful.
+  virtual bool GetAccessibleKeyboardShortcut(std::wstring* shortcut) {
+    return false;
+  }
+
+  // Returns a brief, identifying string, containing a unique, readable name of
+  // a given control. Sets the input string appropriately, and returns true if
+  // successful.
+  virtual bool GetAccessibleName(std::wstring* name) { return false; }
+
+  // Returns the accessibility role of the current view. The role is what
+  // assistive technologies (ATs) use to determine what behavior to expect from
+  // a given control. Sets the input Role appropriately, and returns true if
+  // successful.
+  virtual bool GetAccessibleRole(AccessibilityTypes::Role* role) {
+    return false;
+  }
+
+  // Returns the accessibility state of the current view. Sets the input State
+  // appropriately, and returns true if successful.
+  virtual bool GetAccessibleState(AccessibilityTypes::State* state) {
+    return false;
+  }
+
+  // Assigns a keyboard shortcut string description to the given control. Needed
+  // as a View does not know which shortcut will be associated with it until it
+  // is created to be a certain type.
+  virtual void SetAccessibleKeyboardShortcut(const std::wstring& shortcut) {}
+
+  // Assigns a string name to the given control. Needed as a View does not know
+  // which name will be associated with it until it is created to be a
+  // certain type.
+  virtual void SetAccessibleName(const std::wstring& name) {}
+
+  // Returns an instance of a wrapper class implementing the (platform-specific)
+  // accessibility interface for a given View. If one exists, it will be
+  // re-used, otherwise a new instance will be created.
+  ViewAccessibilityWrapper* GetViewAccessibilityWrapper();
+
+  // Accessor used to determine if a child view (leaf) has accessibility focus.
+  // Returns NULL if there are no children, or if none of the children has
+  // accessibility focus.
+  virtual View* GetAccFocusedChildView() { return NULL; }
+
+  // Floating views
+  //
+  // A floating view is a view that is used to paint a cell within a parent view
+  // Floating Views are painted using PaintFloatingView() above.
+  //
+  // Floating views can also be lazily created and attached to the view
+  // hierarchy to process events. To make this possible, each view is given an
+  // opportunity to create and attach a floating view right before an mouse
+  // event is processed.
+
+  // Retrieves the id for the floating view at the specified coordinates if any.
+  // Derived classes that use floating views should implement this method and
+  // return true if a view has been found and its id set in |id|.
+  virtual bool GetFloatingViewIDForPoint(int x, int y, int* id);
+
+  // Retrieves the ID of the floating view at the specified |position| and sets
+  // it in |id|.
+  // For positions NEXT and PREVIOUS, the specified |starting_id| is used as
+  // the origin, it is ignored for FIRST and LAST.
+  // Returns true if an ID was found, false otherwise.
+  // For CURRENT, the |starting_id| should be set in |id| and true returned if
+  // the |starting_id| is a valid floating view id.
+  // Derived classes that use floating views should implement this method and
+  // return a unique ID for each floating view.
+  // The default implementation always returns false.
+  virtual bool EnumerateFloatingViews(FloatingViewPosition position,
+                                      int starting_id,
+                                      int* id);
+
+  // Creates and attaches the floating view with the specified |id| to this view
+  // hierarchy and returns it.
+  // Derived classes that use floating views should implement this method.
+  //
+  // NOTE: subclasses implementing this should return NULL if passed an invalid
+  // id. An invalid ID may be passed in by the focus manager when attempting
+  // to restore focus.
+  virtual View* ValidateFloatingViewForID(int id);
+
+  // Whether the focus should automatically be restored to the last focused
+  // view. Default implementation returns true.
+  // Derived classes that want to restore focus themselves should override this
+  // method and return false.
+  virtual bool ShouldRestoreFloatingViewFocus();
+
+  // Attach a floating view to the receiving view. The view is inserted
+  // in the child view list and will behave like a normal view. |id| is the
+  // floating view id for that view.
+  void AttachFloatingView(View* v, int id);
+
+  // Return whether a view already has a floating view which bounds intersects
+  // the provided point.
+  //
+  // If the View uses right-to-left UI layout, then the given point is checked
+  // against the mirrored position of each floating View.
+  bool HasFloatingViewForPoint(int x, int y);
+
+  // Detach and delete all floating views. Call this method when your model
+  // or layout changes.
+  void DetachAllFloatingViews();
+
+  // Returns the view with the specified |id|, by calling
+  // ValidateFloatingViewForID if that view has not yet been attached.
+  virtual View* RetrieveFloatingViewForID(int id);
+
+  // Restores the focus to the previously selected floating view.
+  virtual void RestoreFloatingViewFocus();
+
+  // Goes up the parent hierarchy of this view and returns the first floating
+  // view found.  Returns NULL if none were found.
+  View* RetrieveFloatingViewParent();
+
+  // Utility functions
+
+  // Note that the utility coordinate conversions functions always operate on
+  // the mirrored position of the child Views if the parent View uses a
+  // right-to-left UI layout.
+
+  // Convert a point from source coordinate system to dst coordinate system.
+  //
+  // source is a parent or a child of dst, directly or transitively.
+  // If source and dst are not in the same View hierarchy, the result is
+  // undefined.
+  // Source can be NULL in which case it means the screen coordinate system
+  static void ConvertPointToView(const View* src,
+                                 const View* dst,
+                                 gfx::Point* point);
+
+  // Convert a point from the coordinate system of a View to that of the
+  // Widget. This is useful for example when sizing HWND children of the
+  // Widget that don't know about the View hierarchy and need to be placed
+  // relative to the Widget that is their parent.
+  static void ConvertPointToWidget(const View* src, gfx::Point* point);
+
+  // Convert a point from a view Widget to a View dest
+  static void ConvertPointFromWidget(const View* dest, gfx::Point* p);
+
+  // Convert a point from the coordinate system of a View to that of the
+  // screen. This is useful for example when placing popup windows.
+  static void ConvertPointToScreen(const View* src, gfx::Point* point);
+
+  // Event Handlers
+
+  // This method is invoked when the user clicks on this view.
+  // The provided event is in the receiver's coordinate system.
+  //
+  // Return true if you processed the event and want to receive subsequent
+  // MouseDraggged and MouseReleased events.  This also stops the event from
+  // bubbling.  If you return false, the event will bubble through parent
+  // views.
+  //
+  // If you remove yourself from the tree while processing this, event bubbling
+  // stops as if you returned true, but you will not receive future events.
+  // The return value is ignored in this case.
+  //
+  // Default implementation returns true if a ContextMenuController has been
+  // set, false otherwise. Override as needed.
+  //
+  virtual bool OnMousePressed(const MouseEvent& event);
+
+  // This method is invoked when the user clicked on this control.
+  // and is still moving the mouse with a button pressed.
+  // The provided event is in the receiver's coordinate system.
+  //
+  // Return true if you processed the event and want to receive
+  // subsequent MouseDragged and MouseReleased events.
+  //
+  // Default implementation returns true if a ContextMenuController has been
+  // set, false otherwise. Override as needed.
+  //
+  virtual bool OnMouseDragged(const MouseEvent& event);
+
+  // This method is invoked when the user releases the mouse
+  // button. The event is in the receiver's coordinate system.
+  //
+  // If canceled is true it indicates the mouse press/drag was canceled by a
+  // system/user gesture.
+  //
+  // Default implementation notifies the ContextMenuController is appropriate.
+  // Subclasses that wish to honor the ContextMenuController should invoke
+  // super.
+  virtual void OnMouseReleased(const MouseEvent& event, bool canceled);
+
+  // This method is invoked when the mouse is above this control
+  // The event is in the receiver's coordinate system.
+  //
+  // Default implementation does nothing. Override as needed.
+  virtual void OnMouseMoved(const MouseEvent& e);
+
+  // This method is invoked when the mouse enters this control.
+  //
+  // Default implementation does nothing. Override as needed.
+  virtual void OnMouseEntered(const MouseEvent& event);
+
+  // This method is invoked when the mouse exits this control
+  // The provided event location is always (0, 0)
+  // Default implementation does nothing. Override as needed.
+  virtual void OnMouseExited(const MouseEvent& event);
+
+  // Set the MouseHandler for a drag session.
+  //
+  // A drag session is a stream of mouse events starting
+  // with a MousePressed event, followed by several MouseDragged
+  // events and finishing with a MouseReleased event.
+  //
+  // This method should be only invoked while processing a
+  // MouseDragged or MouseReleased event.
+  //
+  // All further mouse dragged and mouse up events will be sent
+  // the MouseHandler, even if it is reparented to another window.
+  //
+  // The MouseHandler is automatically cleared when the control
+  // comes back from processing the MouseReleased event.
+  //
+  // Note: if the mouse handler is no longer connected to a
+  // view hierarchy, events won't be sent.
+  //
+  virtual void SetMouseHandler(View* new_mouse_handler);
+
+  // Request the keyboard focus. The receiving view will become the
+  // focused view.
+  virtual void RequestFocus();
+
+  // Invoked when a view is about to gain focus
+  virtual void WillGainFocus();
+
+  // Invoked when a view just gained focus.
+  virtual void DidGainFocus();
+
+  // Invoked when a view is about lose focus
+  virtual void WillLoseFocus();
+
+  // Invoked when a view is about to be requested for focus due to the focus
+  // traversal. Reverse is this request was generated going backward
+  // (Shift-Tab).
+  virtual void AboutToRequestFocusFromTabTraversal(bool reverse) { }
+
+  // Invoked when a key is pressed or released.
+  // Subclasser should return true if the event has been processed and false
+  // otherwise. If the event has not been processed, the parent will be given a
+  // chance.
+  virtual bool OnKeyPressed(const KeyEvent& e);
+  virtual bool OnKeyReleased(const KeyEvent& e);
+
+  // Whether the view wants to receive Tab and Shift-Tab key events.
+  // If false, Tab and Shift-Tabs key events are used for focus traversal and
+  // are not sent to the view. If true, the events are sent to the view and not
+  // used for focus traversal.
+  // This implementation returns false (so that by default views handle nicely
+  // the keyboard focus traversal).
+  virtual bool CanProcessTabKeyEvents();
+
+  // Invoked when the user uses the mousewheel. Implementors should return true
+  // if the event has been processed and false otherwise. This message is sent
+  // if the view is focused. If the event has not been processed, the parent
+  // will be given a chance.
+  virtual bool OnMouseWheel(const MouseWheelEvent& e);
+
+  // Drag and drop functions.
+
+  // Set/get the DragController. See description of DragController for more
+  // information.
+  void SetDragController(DragController* drag_controller);
+  DragController* GetDragController();
+
+  // During a drag and drop session when the mouse moves the view under the
+  // mouse is queried to see if it should be a target for the drag and drop
+  // session. A view indicates it is a valid target by returning true from
+  // CanDrop. If a view returns true from CanDrop,
+  // OnDragEntered is sent to the view when the mouse first enters the view,
+  // as the mouse moves around within the view OnDragUpdated is invoked.
+  // If the user releases the mouse over the view and OnDragUpdated returns a
+  // valid drop, then OnPerformDrop is invoked. If the mouse moves outside the
+  // view or over another view that wants the drag, OnDragExited is invoked.
+  //
+  // Similar to mouse events, the deepest view under the mouse is first checked
+  // if it supports the drop (Drop). If the deepest view under
+  // the mouse does not support the drop, the ancestors are walked until one
+  // is found that supports the drop.
+
+  // A view that supports drag and drop must override this and return true if
+  // data contains a type that may be dropped on this view.
+  virtual bool CanDrop(const OSExchangeData& data);
+
+  // OnDragEntered is invoked when the mouse enters this view during a drag and
+  // drop session and CanDrop returns true. This is immediately
+  // followed by an invocation of OnDragUpdated, and eventually one of
+  // OnDragExited or OnPerformDrop.
+  virtual void OnDragEntered(const DropTargetEvent& event);
+
+  // Invoked during a drag and drop session while the mouse is over the view.
+  // This should return a bitmask of the DragDropTypes::DragOperation supported
+  // based on the location of the event. Return 0 to indicate the drop should
+  // not be accepted.
+  virtual int OnDragUpdated(const DropTargetEvent& event);
+
+  // Invoked during a drag and drop session when the mouse exits the views, or
+  // when the drag session was canceled and the mouse was over the view.
+  virtual void OnDragExited();
+
+  // Invoked during a drag and drop session when OnDragUpdated returns a valid
+  // operation and the user release the mouse.
+  virtual int OnPerformDrop(const DropTargetEvent& event);
+
+  // Returns true if the mouse was dragged enough to start a drag operation.
+  // delta_x and y are the distance the mouse was dragged.
+  static bool ExceededDragThreshold(int delta_x, int delta_y);
+
+  // This method is the main entry point to process paint for this
+  // view and its children. This method is called by the painting
+  // system. You should call this only if you want to draw a sub tree
+  // inside a custom graphics.
+  // To customize painting override either the Paint or PaintChildren method,
+  // not this one.
+  virtual void ProcessPaint(ChromeCanvas* canvas);
+
+  // Paint the View's child Views, in reverse order.
+  virtual void PaintChildren(ChromeCanvas* canvas);
+
+  // Sets the ContextMenuController. Setting this to non-null makes the View
+  // process mouse events.
+  void SetContextMenuController(ContextMenuController* menu_controller);
+  ContextMenuController* GetContextMenuController() {
+    return context_menu_controller_;
+  }
+
+  // Provides default implementation for context menu handling. The default
+  // implementation calls the ShowContextMenu of the current
+  // ContextMenuController (if it is not NULL). Overridden in subclassed views
+  // to provide right-click menu display triggerd by the keyboard (i.e. for the
+  // Chrome toolbar Back and Forward buttons). No source needs to be specified,
+  // as it is always equal to the current View.
+  virtual void ShowContextMenu(int x,
+                               int y,
+                               bool is_mouse_gesture);
+
+  // The background object is owned by this object and may be NULL.
+  void set_background(Background* b) { background_.reset(b); }
+  const Background* background() const { return background_.get(); }
+
+  // The border object is owned by this object and may be NULL.
+  void set_border(Border* b) { border_.reset(b); }
+  const Border* border() const { return border_.get(); }
+
+  // Returns the insets of the current border. If there is no border an empty
+  // insets is returned.
+  virtual gfx::Insets GetInsets() const;
+
+#if defined(OS_WIN)
+  // TODO(port): Make GetCursorForPoint portable.
+
+  // Return the cursor that should be used for this view or NULL if
+  // the default cursor should be used. The provided point is in the
+  // receiver's coordinate system.
+  virtual HCURSOR GetCursorForPoint(Event::EventType event_type, int x, int y);
+#endif  // defined(OS_WIN)
+
+  // Convenience to test whether a point is within this view's bounds
+  virtual bool HitTest(const gfx::Point& l) const;
+
+  // Gets the tooltip for this View. If the View does not have a tooltip,
+  // return false. If the View does have a tooltip, copy the tooltip into
+  // the supplied string and return true.
+  // Any time the tooltip text that a View is displaying changes, it must
+  // invoke TooltipTextChanged.
+  // The x/y provide the coordinates of the mouse (relative to this view).
+  virtual bool GetTooltipText(int x, int y, std::wstring* tooltip);
+
+  // Returns the location (relative to this View) for the text on the tooltip
+  // to display. If false is returned (the default), the tooltip is placed at
+  // a default position.
+  virtual bool GetTooltipTextOrigin(int x, int y, gfx::Point* loc);
+
+  // Set whether this view is owned by its parent. A view that is owned by its
+  // parent is automatically deleted when the parent is deleted. The default is
+  // true. Set to false if the view is owned by another object and should not
+  // be deleted by its parent.
+  void SetParentOwned(bool f);
+
+  // Return whether a view is owned by its parent. See SetParentOwned()
+  bool IsParentOwned() const;
+
+  // Return the receiving view's class name. A view class is a string which
+  // uniquely identifies the view class. It is intended to be used as a way to
+  // find out during run time if a view can be safely casted to a specific view
+  // subclass. The default implementation returns kViewClassName.
+  virtual std::string GetClassName() const;
+
+  // Returns the first ancestor, starting at this, whose class name is |name|.
+  // Returns null if no ancestor has the class name |name|.
+  View* GetAncestorWithClassName(const std::string& name);
+
+  // Returns the visible bounds of the receiver in the receivers coordinate
+  // system.
+  //
+  // When traversing the View hierarchy in order to compute the bounds, the
+  // function takes into account the mirroring setting for each View and
+  // therefore it will return the mirrored version of the visible bounds if
+  // need be.
+  gfx::Rect GetVisibleBounds();
+
+  // Subclasses that contain traversable children that are not directly
+  // accessible through the children hierarchy should return the associated
+  // FocusTraversable for the focus traversal to work properly.
+  virtual FocusTraversable* GetFocusTraversable() { return NULL; }
+
+#ifndef NDEBUG
+  // Debug method that logs the view hierarchy to the output.
+  void PrintViewHierarchy();
+
+  // Debug method that logs the focus traversal hierarchy to the output.
+  void PrintFocusHierarchy();
+#endif
+
+  // The following methods are used by ScrollView to determine the amount
+  // to scroll relative to the visible bounds of the view. For example, a
+  // return value of 10 indicates the scrollview should scroll 10 pixels in
+  // the appropriate direction.
+  //
+  // Each method takes the following parameters:
+  //
+  // is_horizontal: if true, scrolling is along the horizontal axis, otherwise
+  //                the vertical axis.
+  // is_positive: if true, scrolling is by a positive amount. Along the
+  //              vertical axis scrolling by a positive amount equates to
+  //              scrolling down.
+  //
+  // The return value should always be positive and gives the number of pixels
+  // to scroll. ScrollView interprets a return value of 0 (or negative)
+  // to scroll by a default amount.
+  //
+  // See VariableRowHeightScrollHelper and FixedRowHeightScrollHelper for
+  // implementations of common cases.
+  virtual int GetPageScrollIncrement(ScrollView* scroll_view,
+                                     bool is_horizontal, bool is_positive);
+  virtual int GetLineScrollIncrement(ScrollView* scroll_view,
+                                     bool is_horizontal, bool is_positive);
+
+ protected:
+  // The id of this View. Used to find this View.
+  int id_;
+
+  // The group of this view. Some view subclasses use this id to find other
+  // views of the same group. For example radio button uses this information
+  // to find other radio buttons.
+  int group_;
+
+  // Called when the UI theme has changed, overriding allows individual Views to
+  // do special cleanup and processing (such as dropping resource caches).
+  // Subclasses that override this method must call the base class
+  // implementation to ensure child views are processed.
+  // Can only be called by subclasses. To dispatch a theme changed notification,
+  // call this method on the RootView.
+  virtual void ThemeChanged();
+
+#ifndef NDEBUG
+  // Returns true if the View is currently processing a paint.
+  virtual bool IsProcessingPaint() const;
+#endif
+
+  // Returns the location, in screen coordinates, to show the context menu at
+  // when the context menu is shown from the keyboard. This implementation
+  // returns the middle of the visible region of this view.
+  //
+  // This method is invoked when the context menu is shown by way of the
+  // keyboard.
+  virtual gfx::Point GetKeyboardContextMenuLocation();
+
+  // Called by HitTest to see if this View has a custom hit test mask. If the
+  // return value is true, GetHitTestMask will be called to obtain the mask.
+  // Default value is false, in which case the View will hit-test against its
+  // bounds.
+  virtual bool HasHitTestMask() const;
+
+  // Called by HitTest to retrieve a mask for hit-testing against. Subclasses
+  // override to provide custom shaped hit test regions.
+  virtual void GetHitTestMask(gfx::Path* mask) const;
+
+  // This method is invoked when the tree changes.
+  //
+  // When a view is removed, it is invoked for all children and grand
+  // children. For each of these views, a notification is sent to the
+  // view and all parents.
+  //
+  // When a view is added, a notification is sent to the view, all its
+  // parents, and all its children (and grand children)
+  //
+  // Default implementation does nothing. Override to perform operations
+  // required when a view is added or removed from a view hierarchy
+  //
+  // parent is the new or old parent. Child is the view being added or
+  // removed.
+  //
+  virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child);
+
+  // When SetVisible() changes the visibility of a view, this method is
+  // invoked for that view as well as all the children recursively.
+  virtual void VisibilityChanged(View* starting_from, bool is_visible);
+
+  // Views must invoke this when the tooltip text they are to display changes.
+  void TooltipTextChanged();
+
+  // Actual implementation of GetViewForPoint.
+  virtual View* GetViewForPoint(const gfx::Point& point,
+                                bool can_create_floating);
+
+  // Sets whether this view wants notification when its visible bounds relative
+  // to the root view changes. If true, this view is notified any time the
+  // origin of one its ancestors changes, or the portion of the bounds not
+  // obscured by ancestors changes. The default is false.
+  void SetNotifyWhenVisibleBoundsInRootChanges(bool value);
+  bool GetNotifyWhenVisibleBoundsInRootChanges();
+
+  // Notification that this views visible bounds, relative to the RootView
+  // has changed. The visible bounds corresponds to the region of the
+  // view not obscured by other ancestors.
+  virtual void VisibleBoundsInRootChanged() {}
+
+  // Sets the keyboard focus to this View. The correct way to set the focus is
+  // to call RequestFocus() on the view. This method is called when the focus is
+  // set and gives an opportunity to subclasses to perform any extra focus steps
+  // (for example native component set the native focus on their native
+  // component). The default behavior is to set the native focus on the root
+  // Widget, which is what is appropriate for views that have no native window
+  // associated with them (so the root view gets the keyboard messages).
+  virtual void Focus();
+
+  // Invoked when a key is pressed before the key event is processed by the
+  // focus manager for accelerators.  This gives a chance to the view to
+  // override an accelerator.  Subclasser should return false if they want to
+  // process the key event and not have it translated to an accelerator (if
+  // any).  In that case, OnKeyPressed will subsequently be invoked for that
+  // event.
+  virtual bool ShouldLookupAccelerators(const KeyEvent& e) { return true; }
+
+  // A convenience method for derived classes which have floating views with IDs
+  // that are consecutive numbers in an interval [|low_bound|, |high_bound|[.
+  // They can call this method in their EnumerateFloatingViews implementation.
+  // If |ascending_order| is true, the first id is |low_bound|, the next after
+  // id n is n + 1, and so on.  If |ascending_order| is false, the order is
+  // reversed, first id is |high_bound|, the next id after id n is n -1...
+  static bool EnumerateFloatingViewsForInterval(int low_bound, int high_bound,
+                                                bool ascending_order,
+                                                FloatingViewPosition position,
+                                                int starting_id,
+                                                int* id);
+
+  // These are cover methods that invoke the method of the same name on
+  // the DragController. Subclasses may wish to override rather than install
+  // a DragController.
+  // See DragController for a description of these methods.
+  virtual int GetDragOperations(int press_x, int press_y);
+  virtual void WriteDragData(int press_x, int press_y, OSExchangeData* data);
+
+  // Invoked from DoDrag after the drag completes. This implementation does
+  // nothing, and is intended for subclasses to do cleanup.
+  virtual void OnDragDone();
+
+  // Returns whether we're in the middle of a drag session that was initiated
+  // by us.
+  bool InDrag();
+
+  // Whether this view is enabled.
+  bool enabled_;
+
+  // Whether the view can be focused.
+  bool focusable_;
+
+ private:
+  friend class RootView;
+  friend class FocusManager;
+  friend class ViewStorage;
+
+  // Used to track a drag. RootView passes this into
+  // ProcessMousePressed/Dragged.
+  struct DragInfo {
+    // Sets possible_drag to false and start_x/y to 0. This is invoked by
+    // RootView prior to invoke ProcessMousePressed.
+    void Reset();
+
+    // Sets possible_drag to true and start_x/y to the specified coordinates.
+    // This is invoked by the target view if it detects the press may generate
+    // a drag.
+    void PossibleDrag(int x, int y);
+
+    // Whether the press may generate a drag.
+    bool possible_drag;
+
+    // Coordinates of the mouse press.
+    int start_x;
+    int start_y;
+  };
+
+  // Returns how much the mouse needs to move in one direction to start a
+  // drag. These methods cache in a platform-appropriate way. These values are
+  // used by the public static method ExceededDragThreshold().
+  static int GetHorizontalDragThreshold();
+  static int GetVerticalDragThreshold();
+
+  // RootView invokes these. These in turn invoke the appropriate OnMouseXXX
+  // method. If a drag is detected, DoDrag is invoked.
+  bool ProcessMousePressed(const MouseEvent& e, DragInfo* drop_info);
+  bool ProcessMouseDragged(const MouseEvent& e, DragInfo* drop_info);
+  void ProcessMouseReleased(const MouseEvent& e, bool canceled);
+
+  // Starts a drag and drop operation originating from this view. This invokes
+  // WriteDragData to write the data and GetDragOperations to determine the
+  // supported drag operations. When done, OnDragDone is invoked.
+  void DoDrag(const MouseEvent& e, int press_x, int press_y);
+
+  // Adds a child View at the specified position. |floating_view| should be true
+  // if the |v| is a floating view.
+  void AddChildView(int index, View* v, bool floating_view);
+
+  // Removes |view| from the hierarchy tree.  If |update_focus_cycle| is true,
+  // the next and previous focusable views of views pointing to this view are
+  // updated.  If |update_tool_tip| is true, the tooltip is updated.  If
+  // |delete_removed_view| is true, the view is also deleted (if it is parent
+  // owned).
+  void DoRemoveChildView(View* view,
+                         bool update_focus_cycle,
+                         bool update_tool_tip,
+                         bool delete_removed_view);
+
+  // Sets the parent View. This is called automatically by AddChild and is
+  // thus private.
+  void SetParent(View *parent);
+
+  // Call ViewHierarchyChanged for all child views on all parents
+  void PropagateRemoveNotifications(View* parent);
+
+  // Call ViewHierarchyChanged for all children
+  void PropagateAddNotifications(View* parent, View* child);
+
+  // Call VisibilityChanged() recursively for all children.
+  void PropagateVisibilityNotifications(View* from, bool is_visible);
+
+  // Takes care of registering/unregistering accelerators if
+  // |register_accelerators| true and calls ViewHierarchyChanged().
+  void ViewHierarchyChangedImpl(bool register_accelerators,
+                                bool is_add,
+                                View* parent,
+                                View* child);
+
+  // This is the actual implementation for ConvertPointToView()
+  // Attempts a parent -> child conversion and then a
+  // child -> parent conversion if try_other_direction is true
+  static void ConvertPointToView(const View* src,
+                                 const View* dst,
+                                 gfx::Point* point,
+                                 bool try_other_direction);
+
+  // Propagates UpdateTooltip() to the TooltipManager for the Widget.
+  // This must be invoked any time the View hierarchy changes in such a way
+  // the view under the mouse differs. For example, if the bounds of a View is
+  // changed, this is invoked. Similarly, as Views are added/removed, this
+  // is invoked.
+  void UpdateTooltip();
+
+  // Recursively descends through all descendant views,
+  // registering/unregistering all views that want visible bounds in root
+  // view notification.
+  static void RegisterChildrenForVisibleBoundsNotification(RootView* root,
+                                                           View* view);
+  static void UnregisterChildrenForVisibleBoundsNotification(RootView* root,
+                                                             View* view);
+
+  // Adds/removes view to the list of descendants that are notified any time
+  // this views location and possibly size are changed.
+  void AddDescendantToNotify(View* view);
+  void RemoveDescendantToNotify(View* view);
+
+  // Initialize the previous/next focusable views of the specified view relative
+  // to the view at the specified index.
+  void InitFocusSiblings(View* view, int index);
+
+  // Actual implementation of PrintFocusHierarchy.
+  void PrintViewHierarchyImp(int indent);
+  void PrintFocusHierarchyImp(int indent);
+
+  // Registers/unregister this view's keyboard accelerators with the
+  // FocusManager.
+  void RegisterAccelerators();
+  void UnregisterAccelerators();
+
+  // Returns the number of children that are actually attached floating views.
+  int GetFloatingViewCount() const;
+
+  // Returns the id for this floating view.
+  int GetFloatingViewID();
+
+  // Returns whether this view is a floating view.
+  bool IsFloatingView();
+
+  // Sets in |path| the path in the view hierarchy from |start| to |end| (the
+  // path is the list of indexes in each view's children to get from |start|
+  // to |end|).
+  // Returns true if |start| and |view| are connected and the |path| has been
+  // retrieved succesfully, false otherwise.
+  static bool GetViewPath(View* start, View* end, std::vector<int>* path);
+
+  // Returns the view at the end of the specified |path|, starting at the
+  // |start| view.
+  static View* GetViewForPath(View* start, const std::vector<int>& path);
+
+  // This View's bounds in the parent coordinate system.
+  gfx::Rect bounds_;
+
+  // This view's parent
+  View *parent_;
+
+  // This view's children.
+  typedef std::vector<View*> ViewList;
+  ViewList child_views_;
+
+  // List of floating children. A floating view is always referenced by
+  // child_views_ and will be deleted on destruction just like any other
+  // child view.
+  ViewList floating_views_;
+
+  // Maps a floating view to its floating view id.
+  std::map<View*, int> floating_views_ids_;
+
+  // Whether we want the focus to be restored.  This is used to store/restore
+  // focus for floating views.
+  bool should_restore_focus_;
+
+  // The View's LayoutManager defines the sizing heuristics applied to child
+  // Views. The default is absolute positioning according to bounds_.
+  scoped_ptr<LayoutManager> layout_manager_;
+
+  // Visible state
+  bool is_visible_;
+
+  // Background
+  scoped_ptr<Background> background_;
+
+  // Border.
+  scoped_ptr<Border> border_;
+
+  // Whether this view is owned by its parent.
+  bool is_parent_owned_;
+
+  // See SetNotifyWhenVisibleBoundsInRootChanges.
+  bool notify_when_visible_bounds_in_root_changes_;
+
+  // Whether or not RegisterViewForVisibleBoundsNotification on the RootView
+  // has been invoked.
+  bool registered_for_visible_bounds_notification_;
+
+  // List of descendants wanting notification when their visible bounds change.
+  scoped_ptr<ViewList> descendants_to_notify_;
+
+  // Next view to be focused when the Tab key is pressed.
+  View* next_focusable_view_;
+
+  // Next view to be focused when the Shift-Tab key combination is pressed.
+  View* previous_focusable_view_;
+
+  // The list of accelerators.
+  scoped_ptr<std::vector<Accelerator> > accelerators_;
+
+  // The task used to restore automatically the focus to the last focused
+  // floating view.
+  RestoreFocusTask* restore_focus_view_task_;
+
+  // The menu controller.
+  ContextMenuController* context_menu_controller_;
+
+#if defined(OS_WIN)
+  // The accessibility implementation for this View.
+  scoped_ptr<ViewAccessibilityWrapper> accessibility_;
+#endif
+
+  DragController* drag_controller_;
+
+  // Indicates whether or not the view is going to be mirrored (that is, use a
+  // right-to-left UI layout) if the locale's language is a right-to-left
+  // language like Arabic or Hebrew.
+  bool ui_mirroring_is_enabled_for_rtl_languages_;
+
+  // Indicates whether or not the ChromeCanvas object passed to View::Paint()
+  // is going to be flipped horizontally (using the appropriate transform) on
+  // right-to-left locales for this View.
+  bool flip_canvas_on_paint_for_rtl_ui_;
+
+  DISALLOW_COPY_AND_ASSIGN(View);
+};
+
+}  // namespace views
+
+#endif  // VIEWS_VIEW_H_