[Mac] Refactor bookmark pulsing into BookmarkBubbleObserverCocoa.

chrome/browser/ui/cocoa/browser_window_controller.h

Index: chrome/browser/ui/cocoa/browser_window_controller.h
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.h b/chrome/browser/ui/cocoa/browser_window_controller.h
index 60beb8bcc3ce0788c87027ba0c966be22e466781..0d4dbf272514fc1257e7dfa34259632fe0770ae8 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.h
+++ b/chrome/browser/ui/cocoa/browser_window_controller.h
@@ -28,6 +28,7 @@
 #include "ui/gfx/geometry/rect.h"
 
 @class AvatarBaseController;
+class BookmarkBubbleObserverCocoa;
 class Browser;
 class BrowserWindow;
 class BrowserWindowCocoa;
@@ -91,6 +92,7 @@ class Command;
   // be shut down before our destructors are called.
   StatusBubbleMac* statusBubble_;
 
+  scoped_ptr<BookmarkBubbleObserverCocoa> bookmarkBubbleObserver_;
   BookmarkBubbleController* bookmarkBubbleController_;  // Weak.
   BOOL initializing_;  // YES while we are currently in initWithBrowser:
   BOOL ownsBrowser_;  // Only ever NO when testing
@@ -360,6 +362,9 @@ class Command;
 // coordinates.
 - (NSPoint)bookmarkBubblePoint;
 
+// Called by BookmarkBubbleObserverCocoa when the bubble is closed.
+- (void)bookmarkBubbleClosed;
+
 // Called when the Add Search Engine dialog is closed.
 - (void)sheetDidEnd:(NSWindow*)sheet
          returnCode:(NSInteger)code