Make dynamic mock bindings initialization consistent with other GL implementations

ui/gl/gpu_timing_unittest.cc

 // Copyright 2015 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 "ui/gl/gpu_timing.h"
 
 #include <stdint.h>
 
 #include <memory>
 
@@ skipping 42 matching lines @@
     GLSurfaceTestSupport::InitializeOneOffWithMockBindings();
     gl_.reset(new ::testing::StrictMock<MockGLInterface>());
     MockGLInterface::SetGLInterface(gl_.get());
 
     context_ = new GLContextStubWithExtensions;
     context_->AddExtensionsString(gl_extensions);
     context_->SetGLVersionString(gl_version);
     surface_ = new GLSurfaceStub;
     context_->MakeCurrent(surface_.get());
     gpu_timing_fake_queries_.Reset();
-    GLSurfaceTestSupport::InitializeDynamicMockBindings(context_.get());
 
     setup_ = true;
   }
 
   scoped_refptr<GPUTimingClient> CreateGPUTimingClient() {
     if (!setup_) {
       SetupGLContext("2.0", "");
     }
 
     scoped_refptr<GPUTimingClient> client = context_->CreateGPUTimingClient();
@@ skipping 135 matching lines @@
 
   int64_t start, end;
   gpu_timer->GetStartEndTimestamps(&start, &end);
   // Force time elapsed won't be set until a query is actually attempted
   ASSERT_TRUE(client->IsForceTimeElapsedQuery());
   EXPECT_EQ(begin_cpu_time, start);
   EXPECT_EQ(begin_cpu_time, end);
 }
 
 }  // namespace gl