Swap main menu with app-specific menu when app window focused.

chrome/browser/app_controller_mac.h

 // Copyright (c) 2012 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_APP_CONTROLLER_MAC_H_
 #define CHROME_BROWSER_APP_CONTROLLER_MAC_H_
 
 #if defined(__OBJC__)
 
 #import <Cocoa/Cocoa.h>
@@ skipping 63 matching lines @@
   IBOutlet NSMenuItem* tabposeMenuItem_;
 
   // Indicates wheter an NSPopover is currently being shown.
   BOOL hasPopover_;
 
   // Observers that listen to the work area changes.
   ObserverList<ui::WorkAreaWatcherObserver> workAreaChangeObservers_;
 
   scoped_ptr<PrefChangeRegistrar> profilePrefRegistrar_;
   PrefChangeRegistrar localPrefRegistrar_;
+
+  // The main menu item showing the name of a currently focused packaged app.
+  base::scoped_nsobject<NSMenuItem> appMenuItem_;
 }
 
 @property(readonly, nonatomic) BOOL startupComplete;
 @property(readonly, nonatomic) Profile* lastProfile;
 
 - (void)didEndMainMessageLoop;
 
 // Try to close all browser windows, and if that succeeds then quit.
 - (BOOL)tryToTerminateApplication:(NSApplication*)app;
 
@@ skipping 42 matching lines @@
 namespace app_controller_mac {
 
 // True if we are currently handling an IDC_NEW_{TAB,WINDOW} command. Used in
 // SessionService::Observe() to get around windows/linux and mac having
 // different models of application lifetime.
 bool IsOpeningNewWindow();
 
 }  // namespace app_controller_mac
 
 #endif