Made launcher hidden when kicking off chrome in app mode.

chrome/browser/ui/ash/chrome_shell_delegate.cc

 // 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.
 
 #include "chrome/browser/ui/ash/chrome_shell_delegate.h"
 
 #include "ash/host/root_window_host_factory.h"
 #include "ash/launcher/launcher_types.h"
 #include "ash/magnifier/magnifier_constants.h"
 #include "ash/system/tray/system_tray_delegate.h"
@@ skipping 566 matching lines @@
   if (chromeos::MagnificationManager::Get()) {
     return chromeos::MagnificationManager::Get()->
         GetSavedScreenMagnifierScale();
   }
 #endif
   return std::numeric_limits<double>::min();
 }
 
 ui::MenuModel* ChromeShellDelegate::CreateContextMenu(aura::RootWindow* root) {
   DCHECK(launcher_delegate_);
+  // Don't show context menu for exclusive app runtime mode.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kForceAppMode) &&
+      CommandLine::ForCurrentProcess()->HasSwitch(switches::kAppId)) {
+    return NULL;
+  }
+
   return new LauncherContextMenu(launcher_delegate_, root);
 }
 
 ash::RootWindowHostFactory* ChromeShellDelegate::CreateRootWindowHostFactory() {
   return ash::RootWindowHostFactory::Create();
 }
 
 void ChromeShellDelegate::Observe(int type,
                                   const content::NotificationSource& source,
                                   const content::NotificationDetails& details) {
 #if defined(OS_CHROMEOS)
   switch (type) {
     case chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED:
       ash::Shell::GetInstance()->CreateLauncher();
       break;
     case chrome::NOTIFICATION_SESSION_STARTED:
       ash::Shell::GetInstance()->ShowLauncher();
       break;
     default:
       NOTREACHED() << "Unexpected notification " << type;
   }
 #else
   // MSVC++ warns about switch statements without any cases.
   NOTREACHED() << "Unexpected notification " << type;
 #endif
 }