Add Hide to app menu.

apps/app_shim/extension_app_shim_handler_mac.cc

 // 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.
 
 #include "apps/app_shim/extension_app_shim_handler_mac.h"
 
 #include "apps/app_lifetime_monitor_factory.h"
 #include "apps/app_shim/app_shim_host_manager_mac.h"
 #include "apps/app_shim/app_shim_messages.h"
 #include "apps/native_app_window.h"
@@ skipping 165 matching lines @@
                                  shell_window->extension_id());
   if (host) {
     handler->OnShimQuit(host);
   } else {
     // App shims might be disabled or the shim is still starting up.
     ShellWindowRegistry::Get(shell_window->profile())->
         CloseAllShellWindowsForApp(shell_window->extension_id());
   }
 }
 
+void ExtensionAppShimHandler::HideAppForWindow(ShellWindow* shell_window) {
+  ExtensionAppShimHandler* handler =
+      g_browser_process->platform_part()->app_shim_host_manager()->
+          extension_app_shim_handler();
+  Profile* profile = shell_window->profile();
+  Host* host = handler->FindHost(profile, shell_window->extension_id());
+  if (host)
+    host->OnAppHide();
+  else
+    SetAppHidden(profile, shell_window->extension_id(), true);
+}
+
 // static
 bool ExtensionAppShimHandler::RequestUserAttentionForWindow(
     ShellWindow* shell_window) {
   ExtensionAppShimHandler* handler =
       g_browser_process->platform_part()->app_shim_host_manager()->
           extension_app_shim_handler();
   Profile* profile = shell_window->profile();
   Host* host = handler->FindHost(profile, shell_window->extension_id());
   if (host) {
     // Bring the window to the front without showing it.
@@ skipping 213 matching lines @@
   if (!browser_opened_ever_ && hosts_.empty())
     delegate_->MaybeTerminate();
 }
 
 void ExtensionAppShimHandler::OnAppStop(Profile* profile,
                                         const std::string& app_id) {}
 
 void ExtensionAppShimHandler::OnChromeTerminating() {}
 
 }  // namespace apps