Use stub GL draw/clear calls for browser tests that do not need pixels.

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

 // Copyright (c) 2013 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.
 
 // Browser test for basic Chrome OS file manager functionality:
 //  - The file list is updated when a file is added externally to the Downloads
 //    folder.
 //  - Selecting a file and copy-pasting it with the keyboard copies the file.
 //  - Selecting a file and pressing delete deletes it.
 
@@ skipping 470 matching lines @@
 // The base test class.
 class FileManagerBrowserTest :
       public ExtensionApiTest,
       public ::testing::WithParamInterface<TestParameter> {
  protected:
   FileManagerBrowserTest() :
       local_volume_(new LocalTestVolume),
       drive_volume_(std::tr1::get<0>(GetParam()) != IN_GUEST_MODE ?
                     new DriveTestVolume() : NULL) {}
 
-  virtual void SetUp() OVERRIDE {
-    // TODO(danakj): The GPU Video Decoder needs real GL bindings.
-    // crbug.com/269087
-    UseRealGLBindings();
-
-    ExtensionApiTest::SetUp();
-  }
-
   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE;
 
   virtual void SetUpOnMainThread() OVERRIDE;
 
   // Adds an incognito and guest-mode flags for tests in the guest mode.
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE;
 
   // Loads our testing extension and sends it a string identifying the current
   // test.
   void StartTest();
@@ skipping 241 matching lines @@
     ::testing::Values(TestParameter(NOT_IN_GUEST_MODE, "searchBoxFocus")));
 
 INSTANTIATE_TEST_CASE_P(
     Thumbnails,
     FileManagerBrowserTest,
     ::testing::Values(TestParameter(NOT_IN_GUEST_MODE, "thumbnailsDownloads"),
                       TestParameter(IN_GUEST_MODE, "thumbnailsDownloads")));
 
 }  // namespace
 }  // namespace file_manager