diff --git a/ui/gfx/transform.h b/ui/gfx/transform.h
new file mode 100644
index 0000000..d8f6899
--- /dev/null
+++ b/ui/gfx/transform.h
@@ -0,0 +1,66 @@
+// Copyright (c) 2011 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 UI_GFX_TRANSFORM_H_
+#define UI_GFX_TRANSFORM_H_
+#pragma once
+
+namespace gfx {
+class Point;
+class Rect;
+}
+
+namespace ui {
+
+// Transformation interface.
+// Classes implement this interface to apply transformations (e.g. rotation,
+// scaling etc.) on UI components.
+class Transform {
+ public:
+  // Create an object that implements this interface (e.g. using skia
+  // transformation matrices).
+  static Transform* Create();
+
+  // Set the rotation of the transformation.
+  virtual void SetRotate(float degree) = 0;
+
+  // Set the scaling parameters.
+  virtual void SetScaleX(float x) = 0;
+  virtual void SetScaleY(float y) = 0;
+  virtual void SetScale(float x, float y) = 0;
+
+  // Set the translation parameters.
+  virtual void SetTranslateX(float x) = 0;
+  virtual void SetTranslateY(float y) = 0;
+  virtual void SetTranslate(float x, float y) = 0;
+
+  // Apply rotation on the current transformation.
+  virtual void ConcatRotate(float degree) = 0;
+
+  // Apply scaling on current transform.
+  virtual void ConcatScale(float x, float y) = 0;
+
+  // Apply translation on current transform.
+  virtual void ConcatTranslate(float x, float y) = 0;
+
+  // Apply a transformation on the current transformation
+  // (i.e. 'this = this * transform;')
+  virtual bool ConcatTransform(const Transform& transform) = 0;
+
+  // Does the transformation change anything?
+  virtual bool HasChange() const = 0;
+
+  // Apply the transformation on the point.
+  virtual bool TransformPoint(gfx::Point* point) = 0;
+
+  // Apply the reverse transformation on the point.
+  virtual bool TransformPointReverse(gfx::Point* point) = 0;
+
+  // Apply transformatino on the rectangle.
+  virtual bool TransformRect(gfx::Rect* rect) = 0;
+};
+
+}  // namespace ui
+
+#endif  // UI_GFX_TRANSFORM_H_