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

chrome/browser/extensions/cast_streaming_apitest.cc

 // Copyright 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.
 
 #include "base/command_line.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/common/content_switches.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
 class CastStreamingApiTest : public ExtensionApiTest {
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     ExtensionApiTest::SetUpCommandLine(command_line);
     command_line->AppendSwitchASCII(
         switches::kWhitelistedExtensionID,
         "ddchlicdkolnonkihahngkmmmjnjlkkf");
     command_line->AppendSwitch(switches::kDisableP2PSocketSTUNFilter);
   }
-
-  virtual void SetUp() OVERRIDE {
-    // TODO(danakj): The GPU Video Decoder needs real GL bindings.
-    // crbug.com/269087
-    UseRealGLBindings();
-
-    // These test should be using OSMesa on CrOS, which would make this
-    // unneeded.
-    // crbug.com/313128
-#if !defined(OS_CHROMEOS)
-    UseRealGLContexts();
-#endif
-
-    ExtensionApiTest::SetUp();
-  }
 };
 
 // Test running the test extension for Cast Mirroring API.
 IN_PROC_BROWSER_TEST_F(CastStreamingApiTest, Basics) {
   ASSERT_TRUE(RunExtensionSubtest("cast_streaming", "basics.html"));
 }
 
 }  // namespace extensions