Add create WGC3DInProcessCommandBuffer for on-screen context

webkit/gpu/context_provider_in_process.cc

 // Copyright (c) 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 "webkit/gpu/context_provider_in_process.h"
 
 #include "webkit/gpu/grcontext_for_webgraphicscontext3d.h"
 
 namespace webkit {
 namespace gpu {
@@ skipping 41 matching lines @@
 bool ContextProviderInProcess::InitializeOnMainThread() {
   DCHECK(!context3d_);
 
   WebKit::WebGraphicsContext3D::Attributes attributes;
   attributes.depth = false;
   attributes.stencil = true;
   attributes.antialias = false;
   attributes.shareResources = true;
   attributes.noAutomaticFlushes = true;
 
+  using webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl;
   context3d_.reset(
-      new webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl(
+      WebGraphicsContext3DInProcessCommandBufferImpl::CreateOffscreenContext(
           attributes));
 
   return context3d_;
 }
 
 bool ContextProviderInProcess::BindToCurrentThread() {
   DCHECK(context3d_);
 
   if (lost_context_callback_proxy_)
     return true;
@@ skipping 50 matching lines @@
 }
 
 void ContextProviderInProcess::OnMemoryAllocationChanged(
     bool nonzero_allocation) {
   if (gr_context_)
     gr_context_->SetMemoryLimit(nonzero_allocation);
 }
 
 }  // namespace gpu
 }  // namespace webkit