When deleting bookmark buttons, make sure all delayed messages...

chrome/browser/cocoa/bookmark_bar_folder_controller.mm

 // Copyright (c) 2010 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/cocoa/bookmark_bar_folder_controller.h"
 #include "base/mac_util.h"
 #include "base/nsimage_cache_mac.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/bookmarks/bookmark_utils.h"
@@ skipping 1249 matching lines @@
 }
 
 // TODO(jrg): Refactor BookmarkBarFolder common code. http://crbug.com/35966
 - (void)removeButton:(NSInteger)buttonIndex animate:(BOOL)animate {
   // TODO(mrossetti): Get disappearing animation to work. http://crbug.com/42360
   BookmarkButton* oldButton = [buttons_ objectAtIndex:buttonIndex];
   NSRect poofFrame = [oldButton bounds];
   NSPoint poofPoint = NSMakePoint(NSMidX(poofFrame), NSMidY(poofFrame));
   poofPoint = [oldButton convertPoint:poofPoint toView:nil];
   poofPoint = [[oldButton window] convertBaseToScreen:poofPoint];
+
+  // If a hover-open is pending, cancel it.
+  if (oldButton == buttonThatMouseIsIn_)
+    [NSObject cancelPreviousPerformRequestsWithTarget:self];
+
   [oldButton removeFromSuperview];
   if (animate && !ignoreAnimations_)
     NSShowAnimationEffect(NSAnimationEffectDisappearingItemDefault, poofPoint,
                           NSZeroSize, nil, nil, nil);
   [buttons_ removeObjectAtIndex:buttonIndex];
   for (NSInteger i = 0; i < buttonIndex; ++i) {
     BookmarkButton* button = [buttons_ objectAtIndex:i];
     NSRect buttonFrame = [button frame];
     buttonFrame.origin.y -= bookmarks::kBookmarkBarHeight;
     [button setFrame:buttonFrame];
@@ skipping 40 matching lines @@
   return [folderController_ controllerForNode:node];
 }
 
 #pragma mark TestingAPI Only
 
 - (void)setIgnoreAnimations:(BOOL)ignore {
   ignoreAnimations_ = ignore;
 }
 
 @end  // BookmarkBarFolderController