Add a specialized apps::NativeAppWindow for app_shell

chrome/browser/apps/chrome_apps_client.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 "chrome/browser/apps/chrome_apps_client.h"
 
+#include "apps/shell_window.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/apps/app_metro_infobar_delegate_win.h"
+#include "chrome/browser/ui/apps/chrome_shell_window_delegate.h"
 #include "extensions/common/extension.h"
 
 #if defined(OS_WIN)
 #include "win8/util/win8_util.h"
 #endif
 
 ChromeAppsClient::ChromeAppsClient() {}
 
 ChromeAppsClient::~ChromeAppsClient() {}
 
@@ skipping 19 matching lines @@
   if (win8::IsSingleWindowMetroMode()) {
     AppMetroInfoBarDelegateWin::Create(
         Profile::FromBrowserContext(context),
         AppMetroInfoBarDelegateWin::LAUNCH_PACKAGED_APP,
         extension->id());
     return false;
   }
 #endif
   return true;
 }
+
+apps::ShellWindow* ChromeAppsClient::CreateShellWindow(
+    content::BrowserContext* context,
+    const extensions::Extension* extension) {
+  return new apps::ShellWindow(
+      context, new ChromeShellWindowDelegate, extension);
+}
+
+void ChromeAppsClient::StartKeepAlive() {
+  chrome::StartKeepAlive();
+}
+
+void ChromeAppsClient::EndKeepAlive() {
+  chrome::EndKeepAlive();
+}