[Mac] Refactor bookmark pulsing into BookmarkBubbleObserverCocoa.

chrome/browser/ui/cocoa/bookmarks/bookmark_bubble_controller.h

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_bubble_controller.h
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_bubble_controller.h b/chrome/browser/ui/cocoa/bookmarks/bookmark_bubble_controller.h
index 1650def8af51cc2f067caa7072dd1dc3709ff31b..9d861429aa000f84ebd502013d16307005bca896 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_bubble_controller.h
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_bubble_controller.h
@@ -13,6 +13,7 @@
 @class BookmarkSyncPromoController;
 
 namespace bookmarks {
+class BookmarkBubbleObserver;
 class BookmarkModel;
 class BookmarkNode;
 class ManagedBookmarkService;
@@ -30,8 +31,8 @@ class ManagedBookmarkService;
   bookmarks::BookmarkModel* model_;  // weak
   const bookmarks::BookmarkNode* node_;  // weak
 
-  // The bookmark node whose button we asked to pulse.
-  const bookmarks::BookmarkNode* pulsingBookmarkNode_;  // weak
+  // Inform the observer when the bubble is shown or closed.
+  bookmarks::BookmarkBubbleObserver* bookmarkBubbleObserver_;  // weak
 
   BOOL alreadyBookmarked_;
 
@@ -56,6 +57,7 @@ class ManagedBookmarkService;
 // it desires it to be visible on the screen.  It is not shown by the
 // init routine.  Closing of the window happens implicitly on dealloc.
 - (id)initWithParentWindow:(NSWindow*)parentWindow
+                  observer:(bookmarks::BookmarkBubbleObserver*)observer

[tapted, 2015/08/25 01:13:20]

nit: observer -> bubbleObserver (since there is also a ModelObserver in
|bookmarkObserver_|

[jackhou1, 2015/08/25 04:32:29]

Done.

                    managed:(bookmarks::ManagedBookmarkService*)managed
                      model:(bookmarks::BookmarkModel*)model
                       node:(const bookmarks::BookmarkNode*)node
@@ -77,6 +79,8 @@ class ManagedBookmarkService;
 @interface BookmarkBubbleController (ExposedForUnitTesting)
 
 @property(nonatomic, readonly) NSView* syncPromoPlaceholder;
+@property(nonatomic, readonly)
+    bookmarks::BookmarkBubbleObserver* bookmarkBubbleObserver;
 
 - (void)addFolderNodes:(const bookmarks::BookmarkNode*)parent
          toPopUpButton:(NSPopUpButton*)button