Add a main menu to the shim that matches the one in Chrome.

apps/app_shim/chrome_main_app_mode_mac.mm

 // Copyright 2013 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.
 
 // On Mac, one can't make shortcuts with command-line arguments. Instead, we
 // produce small app bundles which locate the Chromium framework and load it,
 // passing the appropriate data. This is the entry point into the framework for
 // those app bundles.
 
 #import <Cocoa/Cocoa.h>
@@ skipping 46 matching lines @@
 
 // The AppShimController is responsible for communication with the main Chrome
 // process, and generally controls the lifetime of the app shim process.
 class AppShimController : public IPC::Listener {
  public:
   AppShimController();
 
   // Connects to Chrome and sends a LaunchApp message.
   void Init();
 
+  // Builds main menu bar items.
+  void SetUpMenu();
+
   void SendSetAppHidden(bool hidden);
 
   void SendQuitApp();
 
   // Called when the app is activated, either by the user clicking on it in the
   // dock or by Cmd+Tabbing to it.
   void ActivateApp(bool is_reopen);
 
  private:
   // IPC::Listener implemetation.
@@ skipping 13 matching lines @@
   bool launch_app_done_;
 
   DISALLOW_COPY_AND_ASSIGN(AppShimController);
 };
 
 AppShimController::AppShimController() : channel_(NULL),
                                          launch_app_done_(false) {}
 
 void AppShimController::Init() {
   DCHECK(g_io_thread);
+
+  SetUpMenu();
+
+  // Open an IPC channel to Chrome and send the initial app launch message.
   NSString* chrome_bundle_path =
       base::SysUTF8ToNSString(g_info->chrome_outer_bundle_path.value());
   NSBundle* chrome_bundle = [NSBundle bundleWithPath:chrome_bundle_path];
   base::FilePath user_data_dir;
   if (!chrome::GetUserDataDirectoryForBrowserBundle(chrome_bundle,
                                                     &user_data_dir)) {
     Close();
     return;
   }
 
   base::FilePath socket_path =
       user_data_dir.Append(app_mode::kAppShimSocketName);
   IPC::ChannelHandle handle(socket_path.value());
   channel_ = new IPC::ChannelProxy(handle, IPC::Channel::MODE_NAMED_CLIENT,
       this, g_io_thread->message_loop_proxy().get());
 
   channel_->Send(new AppShimHostMsg_LaunchApp(
       g_info->profile_dir, g_info->app_mode_id,
       CommandLine::ForCurrentProcess()->HasSwitch(app_mode::kNoLaunchApp) ?
           apps::APP_SHIM_LAUNCH_REGISTER_ONLY : apps::APP_SHIM_LAUNCH_NORMAL));
 
   nsapp_delegate_.reset([[AppShimDelegate alloc] initWithController:this]);
   DCHECK(![NSApp delegate]);
   [NSApp setDelegate:nsapp_delegate_];
 }
 
+void AppShimController::SetUpMenu() {
+  NSString* title = base::SysUTF16ToNSString(g_info->app_mode_name);
+
+  // Create a main menu since [NSApp mainMenu] is nil.
+  base::scoped_nsobject<NSMenu> main_menu([[NSMenu alloc] initWithTitle:title]);
+
+  // The title of the first item is replaced by OSX with the name of the app and
+  // bold styling. Create a dummy item for this and make it hidden.
+  NSMenuItem* dummy_item = [main_menu addItemWithTitle:title
+                                                action:nil
+                                         keyEquivalent:@""];
+  base::scoped_nsobject<NSMenu> dummy_submenu(
+      [[NSMenu alloc] initWithTitle:title]);
+  [dummy_item setSubmenu:dummy_submenu];

[tapted, 2013/07/22 02:35:09]

just checking - what happens if you delete this line? Does it cause OSX to
replace the second item in main_menu with a bolded app name insead?

[jackhou1, 2013/07/22 11:27:04]

The first item is still replaced, but it doesn't get hidden, even after
[dummy_item setHidden:YES].

+  [dummy_item setHidden:YES];
+
+  // Construct an unbolded app menu, to match how it appears in the Chrome menu
+  // bar when the app is focused.
+  NSMenuItem* item = [main_menu addItemWithTitle:title
+                                          action:nil
+                                   keyEquivalent:@""];
+  base::scoped_nsobject<NSMenu> submenu([[NSMenu alloc] initWithTitle:title]);
+  [item setSubmenu:submenu];
+
+  // Add a quit entry.
+  [submenu addItemWithTitle:[@"Quit " stringByAppendingString:title]
+                     action:@selector(terminate:)
+              keyEquivalent:@"q"];
+
+  [NSApp setMainMenu:main_menu];
+}
+
 void AppShimController::SendQuitApp() {
   channel_->Send(new AppShimHostMsg_QuitApp);
 }
 
 bool AppShimController::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AppShimController, message)
     IPC_MESSAGE_HANDLER(AppShimMsg_LaunchApp_Done, OnLaunchAppDone)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
@@ skipping 262 matching lines @@
   // fully initialized don't receive a reply until its run loop starts. Once
   // the reply is received, Chrome will have opened its IPC port, guaranteed.
   [ReplyEventHandler pingProcess:psn andCall:base::Bind(&OnPingChromeReply)];
 
   base::MessageLoopForUI main_message_loop;
   main_message_loop.set_thread_name("MainThread");
   base::PlatformThread::SetName("CrAppShimMain");
   main_message_loop.Run();
   return 0;
 }