Move Extension into extensions namespace

chrome/browser/extensions/app_process_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/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/process_map.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 11 matching lines @@
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/test/test_navigation_observer.h"
 #include "net/base/mock_host_resolver.h"
 
 using content::NavigationController;
 using content::RenderViewHost;
 using content::WebContents;
+using extensions::Extension;
 
 // Simulates a page calling window.open on an URL, and waits for the navigation.
 static void WindowOpenHelper(Browser* browser,
                              RenderViewHost* opener_host,
                              const GURL& url,
                              bool newtab_process_should_equal_opener) {
   ui_test_utils::WindowedNotificationObserver observer(
       content::NOTIFICATION_LOAD_STOP,
       content::NotificationService::AllSources());
   ASSERT_TRUE(ui_test_utils::ExecuteJavaScript(
@@ skipping 637 matching lines @@
           &browser()->GetSelectedTabContentsWrapper()->web_contents()->
               GetController()));
   browser()->Reload(CURRENT_TAB);
   observer.Wait();
   ASSERT_TRUE(ui_test_utils::ExecuteJavaScriptAndExtractBool(
       contents->GetRenderViewHost(), L"",
       L"window.domAutomationController.send(chrome.app.isInstalled)",
       &is_installed));
   ASSERT_TRUE(is_installed);
 }