CompactLocationBar 1st step:
 * Added OnMouseXXXTab methods to BrowserExtender to handle on tabs.
 * Changed tab to call above methods.
 * Added GetSelectedTab to TabStrip

Minor changes along with the major changes above
* Removed unnecessary file entries in chrome.gyp
* Fixed a few method's const.
* Removed unnecessary class declarations and includes.

Know issue: keyboard focus is not working.
In 2nd step, I'm going to eliminate popup and use whatever that FindBar is using to show compact location bar. I'll fix the issue above after this migration. (if it still persists)

BUG=None
Test=None

Review URL: http://codereview.chromium.org/341008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30386 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/views/view.cc b/views/view.cc
index 1e09824..1e1cd206 100644
--- a/views/view.cc
+++ b/views/view.cc
@@ -1384,7 +1384,7 @@
   return 0;
 }
 
-ThemeProvider* View::GetThemeProvider() {
+ThemeProvider* View::GetThemeProvider() const {
   Widget* widget = GetWidget();
   return widget ? widget->GetThemeProvider() : NULL;
 }