[Mac] Enable click-drag-release behavior in the Wrench menu's custom items.

chrome/browser/cocoa/wrench_menu_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_COCOA_WRENCH_MENU_CONTROLLER_H_
 #define CHROME_BROWSER_COCOA_WRENCH_MENU_CONTROLLER_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/cocoa_protocols_mac.h"
 #import "chrome/browser/cocoa/menu_controller.h"
 
+@class MenuTrackedRootView;
 @class ToolbarController;
 class WrenchMenuModel;
 
 // The Wrench menu has a creative layout, with buttons in menu items. There is
 // a cross-platform model for this special menu, but on the Mac it's easier to
 // get spacing and alignment precisely right using a NIB. To do that, we
 // subclass the generic MenuController implementation and special-case the two
 // items that require specific layout and load them from the NIB.
 //
 // This object is instantiated in Toolbar.xib and is configured by the
 // ToolbarController.
 @interface WrenchMenuController : MenuController<NSMenuDelegate> {
-  IBOutlet NSView* editItem_;
-  IBOutlet NSSegmentedControl* editControl_;
+  IBOutlet MenuTrackedRootView* editItem_;
+  IBOutlet NSButton* editCut_;
+  IBOutlet NSButton* editCopy_;
+  IBOutlet NSButton* editPaste_;
 
-  IBOutlet NSView* zoomItem_;
+  IBOutlet MenuTrackedRootView* zoomItem_;
   IBOutlet NSButton* zoomPlus_;
   IBOutlet NSButton* zoomDisplay_;
   IBOutlet NSButton* zoomMinus_;
   IBOutlet NSButton* zoomFullScreen_;
 }
 
 // Designated initializer; called within the NIB.
 - (id)init;
 
 // Used to dispatch commands from the Wrench menu. The custom items within the
@@ skipping 13 matching lines @@
 // |-dispatchWrenchMenuCommand:| calls this after it has determined the tag of
 // the sender. The default implementation executes the command on the outermost
 // run loop using |-performSelector...withDelay:|. This is not desirable in
 // unit tests because it's hard to test around run loops in a deterministic
 // manner. To avoid those headaches, tests should provide an alternative
 // implementation.
 - (void)dispatchCommandInternal:(NSInteger)tag;
 @end
 
 #endif  // CHROME_BROWSER_COCOA_WRENCH_MENU_CONTROLLER_H_