Move ExtensionHost into extensions namespace

chrome/browser/extensions/gpu_browsertest.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.
 
 // 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/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "content/public/browser/render_view_host.h"
 #include "webkit/glue/webpreferences.h"
 
 // Tests that GPU-related WebKit preferences are set for extension background
 // pages. See http://crbug.com/64512.
 IN_PROC_BROWSER_TEST_F(ExtensionBrowserTest, WebKitPrefsBackgroundPage) {
   ASSERT_TRUE(LoadExtension(
       test_data_dir_.AppendASCII("good").AppendASCII("Extensions")
                     .AppendASCII("behllobkkfkfnphdnhnkndlbkcpglgmj")
                     .AppendASCII("1.0.0.0")));
 
   ExtensionProcessManager* manager =
       browser()->profile()->GetExtensionProcessManager();
-  ExtensionHost* host = FindHostWithPath(manager, "/backgroundpage.html", 1);
+  extensions::ExtensionHost* host =
+      FindHostWithPath(manager, "/backgroundpage.html", 1);
   webkit_glue::WebPreferences prefs =
       host->render_view_host()->GetWebkitPreferences();
   ASSERT_TRUE(prefs.experimental_webgl_enabled);
   ASSERT_TRUE(prefs.accelerated_compositing_enabled);
   ASSERT_TRUE(prefs.accelerated_2d_canvas_enabled);
 }