fix for 27454 - Fade out close button state on mouse exit

chrome/browser/ui/cocoa/hover_button.h

Index: chrome/browser/ui/cocoa/hover_button.h
diff --git a/chrome/browser/ui/cocoa/hover_button.h b/chrome/browser/ui/cocoa/hover_button.h
index 022c12073bd98a69c1917a5d2e1e923877302f69..2ddbc9fd1ebf49ea671e93c122bcc2c17d9d79e8 100644
--- a/chrome/browser/ui/cocoa/hover_button.h
+++ b/chrome/browser/ui/cocoa/hover_button.h
@@ -6,6 +6,8 @@
 
 #include "base/memory/scoped_nsobject.h"
 
+@class CrTrackingArea;
+
 // A button that changes when you hover over it and click it.
 @interface HoverButton : NSButton {
  @protected
@@ -21,10 +23,12 @@
 
  @private
   // Tracking area for button mouseover states.
-  scoped_nsobject<NSTrackingArea> trackingArea_;
+  scoped_nsobject<CrTrackingArea> trackingArea_;

[Robert Sesek, 2011/07/12 18:11:40]

You may want to use ScopedCrTracingArea.

[dmac, 2011/07/12 19:04:42]

Done.

 }
 
-// Enables or disables the |NSTrackingRect|s for the button.
+@property (nonatomic) HoverState hoverState;

[Robert Sesek, 2011/07/12 18:11:40]

nit: no space before (

[dmac, 2011/07/12 19:04:42]

Done.

+
+// Enables or disables the tracking for the button.
 - (void)setTrackingEnabled:(BOOL)enabled;
 
 // Checks to see whether the mouse is in the button's bounds and update