Move Extension into extensions namespace

chrome/browser/extensions/lazy_background_page_apitest.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 "base/command_line.h"
 #include "base/file_path.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/omnibox/location_bar.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/web_contents.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/mock_host_resolver.h"
 
+using extensions::Extension;
+
 namespace {
 // Helper class to wait for a lazy background page to load and close again.
 class LazyBackgroundObserver {
  public:
   LazyBackgroundObserver()
       : page_created_(chrome::NOTIFICATION_EXTENSION_BACKGROUND_PAGE_READY,
                       content::NotificationService::AllSources()),
         page_closed_(chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED,
                      content::NotificationService::AllSources()) {
   }
@@ skipping 343 matching lines @@
 
   // The browser action has a new title.
   BrowserActionTestUtil browser_action(browser());
   ASSERT_EQ(1, browser_action.NumberOfBrowserActions());
   EXPECT_EQ("Success", browser_action.GetTooltip(0));
 }
 
 // TODO: background page with timer.
 // TODO: background page that interacts with popup.
 // TODO: background page with menu.