(Mac) Display the bookmark bar off-the-side menu on mouse down. Also align the menu.

chrome/browser/cocoa/menu_button.mm

 // Copyright (c) 2009 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/menu_button.h"
 
 #include "base/logging.h"
 #include "base/scoped_nsobject.h"
 #import "chrome/browser/cocoa/clickhold_button_cell.h"
 
@@ skipping 36 matching lines @@
 
 @synthesize menu = menu_;
 
 @end  // @implementation MenuButton
 
 @implementation MenuButton (Private)
 
 // Reset various settings of the button and its associated |ClickHoldButtonCell|
 // to the standard state which provides reasonable defaults.
 - (void)resetToDefaults {
-  id cell = [self cell];
+  ClickHoldButtonCell* cell = [self cell];
   DCHECK([cell isKindOfClass:[ClickHoldButtonCell class]]);
   [cell setEnableClickHold:YES];
   [cell setClickHoldTimeout:0.0];       // Make menu trigger immediately.
   [cell setAction:@selector(clickShowMenu:)];
   [cell setTarget:self];
   [cell setClickHoldAction:@selector(dragShowMenu:)];
   [cell setClickHoldTarget:self];
 }
 
 // Actually show the menu (in the correct location). |isDragging| indicates
@@ skipping 41 matching lines @@
 - (void)clickShowMenu:(id)sender {
   [self showMenu:NO];
 }
 
 // Called when the button is clicked and dragged/held.
 - (void)dragShowMenu:(id)sender {
   [self showMenu:YES];
 }
 
 @end  // @implementation MenuButton (Private)