Cleanup: Pull some browser keep alive functions into its own file.

chrome/browser/ui/apps/chrome_app_delegate.cc

 // Copyright 2014 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/apps/chrome_app_delegate.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
-#include "chrome/browser/apps/scoped_keep_alive.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/favicon/favicon_utils.h"
 #include "chrome/browser/file_select_helper.h"
+#include "chrome/browser/lifetime/browser_keep_alive.h"
 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/browser_navigator_params.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
@@ skipping 15 matching lines @@
 
 #if defined(ENABLE_PRINTING)
 #if defined(ENABLE_PRINT_PREVIEW)
 #include "chrome/browser/printing/print_preview_message_handler.h"
 #include "chrome/browser/printing/print_view_manager.h"
 #else
 #include "chrome/browser/printing/print_view_manager_basic.h"
 #endif  // defined(ENABLE_PRINT_PREVIEW)
 #endif  // defined(ENABLE_PRINTING)
 
+using browser_lifetime::ScopedKeepAlive;
+
 namespace {
 
 // Time to wait for an app window to show before allowing Chrome to quit.
 int kAppWindowFirstShowTimeoutSeconds = 10;
 
 bool disable_external_open_for_testing_ = false;
 
 // Opens a URL with Chromium (not external browser) with the right profile.
 content::WebContents* OpenURLFromTabInternal(
     content::BrowserContext* context,
@@ skipping 291 matching lines @@
                                 const content::NotificationDetails& details) {
   switch (type) {
     case chrome::NOTIFICATION_APP_TERMINATING:
       if (!terminating_callback_.is_null())
         terminating_callback_.Run();
       break;
     default:
       NOTREACHED() << "Received unexpected notification";
   }
 }