Updates to clean up default theme and add hover states

chrome/browser/cocoa/tab_strip_controller.h

Index: chrome/browser/cocoa/tab_strip_controller.h
===================================================================
--- chrome/browser/cocoa/tab_strip_controller.h	(revision 24798)
+++ chrome/browser/cocoa/tab_strip_controller.h	(working copy)
@@ -38,7 +38,7 @@
            GTMWindowSheetControllerDelegate> {
  @private
   TabContents* currentTab_;   // weak, tab for which we're showing state
-  TabStripView* tabView_;  // weak
+  scoped_nsobject<TabStripView> tabView_;  // strong
   NSView* switchView_;  // weak
   scoped_nsobject<NSView> dragBlockingView_;  // avoid bad window server drags
   NSButton* newTabButton_;  // weak, obtained from the nib.
@@ -72,11 +72,9 @@
   // width should be used, this will have a value of |kUseFullAvailableWidth|.
   float availableResizeWidth_;
   // A tracking area that's the size of the tab strip used to be notified
-  // when the mouse leaves the tab strip. It's installed when the user clicks
-  // the close box of a tab and is removed when they move the mouse outside
-  // of the strip. When they do, we resize the tabs to use all available
-  // space.
-  scoped_nsobject<NSTrackingArea> closeTabTrackingArea_;
+  // when the mouse moves in the tab strip
+  scoped_nsobject<NSTrackingArea> trackingArea_;
+  TabView* hoveredTab_;  // weak. Tab that the mouse is hovering over
 
   // Array of subviews which are permanent (and which should never be removed),
   // such as the new-tab button, but *not* the tabs themselves.
@@ -129,8 +127,8 @@
 // Force the tabs to rearrange themselves to reflect the current model.
 - (void)layoutTabs;
 
-// The user changed the theme.
-- (void)userChangedTheme;
+// The user changed the theme, or theme state changed.
+- (void)applyTheme;
 
 // Default height for tabs.
 + (CGFloat)defaultTabHeight;