aura: Allow in process ContextProvider to hold onscreen contexts.

webkit/common/gpu/test_context_provider_factory.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/common/gpu/test_context_provider_factory.h"
 
 #include "base/logging.h"
 #include "cc/output/context_provider.h"
 #include "webkit/common/gpu/context_provider_in_process.h"
 
 namespace webkit {
 namespace gpu {
 
 static TestContextProviderFactory* context_provider_instance = NULL;
 
 // static
 TestContextProviderFactory* TestContextProviderFactory::GetInstance() {
   if (!context_provider_instance)
     context_provider_instance = new TestContextProviderFactory();
   return context_provider_instance;
 }
 
 TestContextProviderFactory::TestContextProviderFactory() {}
 
 TestContextProviderFactory::~TestContextProviderFactory() {}
 
 scoped_refptr<cc::ContextProvider> TestContextProviderFactory::
     OffscreenContextProviderForMainThread() {
   if (!main_thread_.get() || main_thread_->DestroyedOnMainThread()) {
-    main_thread_ = ContextProviderInProcess::Create();
+    main_thread_ = ContextProviderInProcess::CreateOffscreen();
     if (main_thread_.get() && !main_thread_->BindToCurrentThread())
       main_thread_ = NULL;
   }
   return main_thread_;
 }
 
 }  // namespace gpu
 }  // namespace webkit