gpu: Introduce GpuChannelEstablishFactory.

content/browser/renderer_host/context_provider_factory_impl_android.h

 // Copyright 2016 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_CONTEXT_PROVIDER_FACTORY_IMPL_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_CONTEXT_PROVIDER_FACTORY_IMPL_ANDROID_H_
 
 #include <list>
 
 #include "base/macros.h"
@@ skipping 81 matching lines @@
     bool support_locking;
     bool automatic_flushes;
     cc::ContextProvider* shared_context_provider;
     ContextProviderCallback result_callback;
   };
 
   ContextProviderFactoryImpl();
 
   // Will return nullptr if the Gpu channel has not been established.
   gpu::GpuChannelHost* EnsureGpuChannelEstablished();
-  void OnGpuChannelEstablished();
+  void OnGpuChannelEstablished(scoped_refptr<gpu::GpuChannelHost> gpu_channel);
   void OnGpuChannelTimeout();
 
   void HandlePendingRequests();
 
   std::list<ContextProvidersRequest> context_provider_requests_;
 
   scoped_refptr<ContextProviderCommandBuffer> shared_worker_context_provider_;
 
   scoped_refptr<cc::VulkanContextProvider> shared_vulkan_context_provider_;
 
   bool in_handle_pending_requests_;
 
   base::OneShotTimer establish_gpu_channel_timeout_;
 
   std::unique_ptr<cc::SurfaceManager> surface_manager_;
   int surface_client_id_;
 
   base::WeakPtrFactory<ContextProviderFactoryImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ContextProviderFactoryImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_CONTEXT_PROVIDER_FACTORY_IMPL_ANDROID_H_