| // Copyright 2012 The Chromium Authors | 
 | // 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/profiles/profile.h" | 
 | #include "chrome/browser/ui/browser.h" | 
 | #include "content/public/browser/render_view_host.h" | 
 | #include "content/public/test/browser_test.h" | 
 | #include "extensions/browser/extension_host.h" | 
 | #include "extensions/browser/process_manager.h" | 
 |  | 
 | namespace extensions { | 
 |  | 
 | // Tests that background pages are marked as never composited to prevent GPU | 
 | // resource allocation. See crbug.com/362165 and crbug.com/163698. | 
 | IN_PROC_BROWSER_TEST_F(ExtensionBrowserTest, BackgroundPageIsNeverComposited) { | 
 |   ASSERT_TRUE(LoadExtension( | 
 |       test_data_dir_.AppendASCII("good").AppendASCII("Extensions") | 
 |                     .AppendASCII("behllobkkfkfnphdnhnkndlbkcpglgmj") | 
 |                     .AppendASCII("1.0.0.0"))); | 
 |  | 
 |   ProcessManager* manager = ProcessManager::Get(profile()); | 
 |   ExtensionHost* host = FindHostWithPath(manager, "/backgroundpage.html", 1); | 
 |   ASSERT_TRUE(host->host_contents()->IsNeverComposited()); | 
 | } | 
 |  | 
 | }  // namespace extensions |