Decouple cc::FakeWebGraphicsContext3D from blink::WGC3D

cc/output/gl_renderer.cc

 // Copyright 2010 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 "cc/output/gl_renderer.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 #include <string>
@@ skipping 148 matching lines @@
 
 GLRenderer::GLRenderer(RendererClient* client,
                        const LayerTreeSettings* settings,
                        OutputSurface* output_surface,
                        ResourceProvider* resource_provider,
                        TextureMailboxDeleter* texture_mailbox_deleter,
                        int highp_threshold_min)
     : DirectRenderer(client, settings, output_surface, resource_provider),
       offscreen_framebuffer_id_(0),
       shared_geometry_quad_(gfx::RectF(-0.5f, -0.5f, 1.0f, 1.0f)),
-      context_(output_surface->context_provider()->Context3d()),
       gl_(output_surface->context_provider()->ContextGL()),
       context_support_(output_surface->context_provider()->ContextSupport()),
       texture_mailbox_deleter_(texture_mailbox_deleter),
       is_backbuffer_discarded_(false),
       visible_(true),
       is_scissor_enabled_(false),
       scissor_rect_needs_reset_(true),
       stencil_shadow_(false),
       blend_shadow_(false),
       highp_threshold_min_(highp_threshold_min),
@@ skipping 39 matching lines @@
     pending_async_read_pixels_.pop_back();
   }
 
   CleanupSharedObjects();
 }
 
 const RendererCapabilities& GLRenderer::Capabilities() const {
   return capabilities_;
 }
 
-WebGraphicsContext3D* GLRenderer::Context() { return context_; }
-
 void GLRenderer::DebugGLCall(GLES2Interface* gl,
                              const char* command,
                              const char* file,
                              int line) {
   GLuint error = gl->GetError();
   if (error != GL_NO_ERROR)
     LOG(ERROR) << "GL command failed: File: " << file << "\n\tLine " << line
                << "\n\tcommand: " << command << ", error "
                << static_cast<int>(error) << "\n";
 }
@@ skipping 2767 matching lines @@
   is_scissor_enabled_ = false;
   GLC(gl_, gl_->Disable(GL_SCISSOR_TEST));
   scissor_rect_needs_reset_ = true;
 }
 
 bool GLRenderer::IsContextLost() {
   return output_surface_->context_provider()->IsContextLost();
 }
 
 }  // namespace cc