Mac, Bookmarks. Be more sparing about closing the bookmark folder menus.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.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_controller.h"
 
 #include "app/mac/nsimage_cache.h"
 #include "base/mac/mac_util.h"
 #include "base/metrics/histogram.h"
 #include "base/sys_string_conversions.h"
@@ skipping 2296 matching lines @@
     if (node) {
       const BookmarkNode* parent = node->parent();
       bookmarkModel_->Remove(parent,
                              parent->GetIndexOf(node));
     }
   }
 }
 
 - (void)bookmarkDragDidEnd:(BookmarkButton*)button
                  operation:(NSDragOperation)operation {
-  [self closeFolderAndStopTrackingMenus];
   [button setHidden:NO];
   [self resetAllButtonPositionsWithAnimation:YES];
 }
 
 
 #pragma mark BookmarkButtonControllerProtocol
 
 // Close all bookmark folders.  "Folder" here is the fake menu for
 // bookmark folders, not a button context menu.
 - (void)closeAllBookmarkFolders {
@@ skipping 400 matching lines @@
 // to minimize touching the object passed in (likely a mock).
 - (void)setButtonContextMenu:(id)menu {
   buttonContextMenu_ = menu;
 }
 
 - (void)setIgnoreAnimations:(BOOL)ignore {
   ignoreAnimations_ = ignore;
 }
 
 @end