Mac. Fix bug where accessibility gives a stuck highlight on item 1 of bookmark folder menus. Just...

chrome/browser/ui/cocoa/bookmarks/bookmark_button.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_button.h"
 
 #include "base/logging.h"
 #import "base/memory/scoped_nsobject.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h"
@@ skipping 334 matching lines @@
 
 - (void)mouseDragged:(NSEvent*)theEvent {
   if ([delegate_ respondsToSelector:@selector(mouseDragged:)])
     [id(delegate_) mouseDragged:theEvent];
 }
 
 + (BookmarkButton*)draggedButton {
   return gDraggedButton;
 }
 
+- (BOOL)canBecomeKeyView {
+  // If button is an item in a folder menu, don't become key.
+  return ![[self cell] isFolderButtonCell];
+}
+
 // This only gets called after a click that wasn't a drag, and only on folders.
 - (void)secondaryMouseUpAction:(BOOL)wasInside {
   const NSTimeInterval kShortClickLength = 0.5;
   // Long clicks that end over the folder button result in the menu hiding.
   if (wasInside && ([self durationMouseWasDown] > kShortClickLength)) {
     [[self target] performSelector:[self action] withObject:self];
   } else {
     // Mouse tracked out of button during menu track. Hide menus.
     if (!wasInside)
       [delegate_ bookmarkDragDidEnd:self
@@ skipping 52 matching lines @@
   [image drawAtPoint:NSMakePoint(0, 0)
             fromRect:NSMakeRect(0, 0, NSWidth(bounds), NSHeight(bounds))
            operation:NSCompositeSourceOver
             fraction:kDragImageOpacity];
 
   [dragImage unlockFocus];
   return dragImage;
 }
 
 @end  // @implementation BookmarkButton(Private)