Ensure GL initialization only happens once, and provide common init path

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc

 // 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 97 matching lines @@
     bool has_alpha,
     bool has_depth,
     bool has_stencil,
     bool request_alpha,
     bool request_depth,
     bool request_stencil,
     bool bind_generates_resource,
     const CommandLine* command_line) {
   Framebuffer::ClearFramebufferCompleteComboMap();
 
-  gfx::ClearGLBindings();
-  gfx::InitializeStaticGLBindings(gfx::kGLImplementationMockGL);
+  gfx::GLSurface::InitializeOneOffWithMockBindingsForTests();
 
   gl_.reset(new StrictMock<MockGLInterface>());
   ::gfx::GLInterface::SetGLInterface(gl_.get());
 
   // Only create stream texture manager if extension is requested.
   std::vector<std::string> list;
   base::SplitString(std::string(extensions), ' ', &list);
   if (std::find(list.begin(), list.end(),
                 "GL_CHROMIUM_stream_texture") != list.end())
       stream_texture_manager_.reset(new StrictMock<MockStreamTextureManager>);
@@ skipping 155 matching lines @@
   shared_memory_base_ = buffer.ptr;
 
   surface_ = new gfx::GLSurfaceStub;
   surface_->SetSize(gfx::Size(kBackBufferWidth, kBackBufferHeight));
 
   context_ = new gfx::GLContextStubWithExtensions;
   context_->AddExtensionsString(extensions);
   context_->SetGLVersionString(gl_version);
 
   context_->MakeCurrent(surface_.get());
-  gfx::InitializeDynamicGLBindings(gfx::kGLImplementationMockGL, context_);
+  gfx::GLSurface::InitializeDynamicMockBindingsForTests(context_);
 
   int32 attributes[] = {
     EGL_ALPHA_SIZE, request_alpha ? 8 : 0,
     EGL_DEPTH_SIZE, request_depth ? 24 : 0,
     EGL_STENCIL_SIZE, request_stencil ? 8 : 0,
   };
   std::vector<int32> attribs(attributes, attributes + arraysize(attributes));
 
   decoder_.reset(GLES2Decoder::Create(group_.get()));
   decoder_->GetLogger()->set_log_synthesized_gl_errors(false);
@@ skipping 1132 matching lines @@
   SetupDefaultProgram();
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_unittest_0_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu