Merge 84005 - Mac. Ensure no more than one visibly selected item in each bookmark folder menu.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_button_cell.mm

 // Copyright (c) 2011 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.
 
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_button_cell.h"
 
 @implementation BookmarkBarFolderButtonCell
 
 + (id)buttonCellForNode:(const BookmarkNode*)node
             contextMenu:(NSMenu*)contextMenu
                cellText:(NSString*)cellText
               cellImage:(NSImage*)cellImage {
   id buttonCell =
       [[[BookmarkBarFolderButtonCell alloc] initForNode:node
                                             contextMenu:contextMenu
                                                cellText:cellText
                                               cellImage:cellImage]
        autorelease];
   return buttonCell;
 }
 
 - (BOOL)isFolderButtonCell {
   return YES;
 }
 
+- (void)setMouseInside:(BOOL)flag animate:(BOOL)animated {
+}
+
 @end