[Mac] Refactor bookmark pulsing into BookmarkBubbleObserverCocoa.

chrome/browser/ui/views/bookmarks/bookmark_bar_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/bookmarks/bookmark_bar_view.h"
 
 #include <algorithm>
 #include <limits>
 #include <string>
 #include <vector>
@@ skipping 1195 matching lines @@
     UMA_HISTOGRAM_COUNTS("Import.ShowDialog.FromBookmarkBarView",
                          time_from_install);
   } else if (bookmark_bar_state_ == BookmarkBar::DETACHED) {
     UMA_HISTOGRAM_COUNTS("Import.ShowDialog.FromFloatingBookmarkBarView",
                          time_from_install);
   }
 
   chrome::ShowImportDialog(browser_);
 }
 
-void BookmarkBarView::OnBookmarkBubbleShown(const GURL& url) {
+void BookmarkBarView::OnBookmarkBubbleShown(const BookmarkNode* node) {
   StopThrobbing(true);
-  const BookmarkNode* node = model_->GetMostRecentlyAddedUserNodeForURL(url);
   if (!node)
     return;  // Generally shouldn't happen.
   StartThrobbing(node, false);
 }
 
 void BookmarkBarView::OnBookmarkBubbleHidden() {
   StopThrobbing(false);
 }
 
 void BookmarkBarView::BookmarkModelLoaded(BookmarkModel* model,
@@ skipping 846 matching lines @@
     return;
   apps_page_shortcut_->SetVisible(visible);
   UpdateBookmarksSeparatorVisibility();
   LayoutAndPaint();
 }
 
 void BookmarkBarView::OnShowManagedBookmarksPrefChanged() {
   if (UpdateOtherAndManagedButtonsVisibility())
     LayoutAndPaint();
 }