Use GLVersionInfo instead of gl::GetGLImplementation() to decide GL paths

gpu/command_buffer/service/test_helper.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_TEST_HELPER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_TEST_HELPER_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 209 matching lines @@
   static void SetupTextureInitializationExpectations(::gl::MockGLInterface* gl,
                                                      GLenum target,
                                                      bool use_default_textures);
   static void SetupTextureDestructionExpectations(::gl::MockGLInterface* gl,
                                                   GLenum target,
                                                   bool use_default_textures);
 
   static std::vector<std::string> split_extensions_;
 };
 
-// This object temporaritly Sets what gl::GetGLImplementation returns. During
-// testing the GLImplementation is set to kGLImplemenationMockGL but lots of
-// code branches based on what gl::GetGLImplementation returns.
-class ScopedGLImplementationSetter {
- public:
-  explicit ScopedGLImplementationSetter(gl::GLImplementation implementation);
-  ~ScopedGLImplementationSetter();
-
- private:
-  gl::GLImplementation old_implementation_;
-};
-
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_TEST_HELPER_H_