Implement the Platform::sharedOffscreenGraphicsContext3D method.

webkit/gpu/context_provider_in_process.h

 // 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.
 
-#ifndef CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER
-#define CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER
+#ifndef WEBKIT_GPU_CONTEXT_PROVIDER_IN_PROCESS_H_
+#define WEBKIT_GPU_CONTEXT_PROVIDER_IN_PROCESS_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "cc/context_provider.h"
-#include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
+
+namespace WebKit { class WebGraphicsContext3D; }
 
 namespace webkit {
 namespace gpu {
 class GrContextForWebGraphicsContext3D;
-}
-}
 
-namespace content {
-
-// Implementation of cc::ContextProvider that provides a
-// WebGraphicsContext3DCommandBufferImpl context and a GrContext.
-class ContextProviderCommandBuffer : public cc::ContextProvider {
+class ContextProviderInProcess : public cc::ContextProvider {
  public:
-  ContextProviderCommandBuffer();
+  enum InProcessType {
+    IN_PROCESS,
+    IN_PROCESS_COMMAND_BUFFER,
+  };
+  explicit ContextProviderInProcess(InProcessType type);
 
   virtual bool InitializeOnMainThread() OVERRIDE;
   virtual bool BindToCurrentThread() OVERRIDE;
-  virtual WebGraphicsContext3DCommandBufferImpl* Context3d() OVERRIDE;
+  virtual WebKit::WebGraphicsContext3D* Context3d() OVERRIDE;
   virtual class GrContext* GrContext() OVERRIDE;
   virtual void VerifyContexts() OVERRIDE;
 
   bool DestroyedOnMainThread();
 
  protected:
-  virtual ~ContextProviderCommandBuffer();
+  virtual ~ContextProviderInProcess();
 
-  // Subclass must provide an implementation to create an offscreen context.
-  virtual scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
-      CreateOffscreenContext3d() = 0;
+  scoped_ptr<WebKit::WebGraphicsContext3D> CreateOffscreenContext3d();
 
   virtual void OnLostContext();
   virtual void OnMemoryAllocationChanged(bool nonzero_allocation);
 
  private:
-
-  scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d_;
+  InProcessType type_;
+  scoped_ptr<WebKit::WebGraphicsContext3D> context3d_;
   scoped_ptr<webkit::gpu::GrContextForWebGraphicsContext3D> gr_context_;
 
   base::Lock destroyed_lock_;
   bool destroyed_;
 
   class LostContextCallbackProxy;
   scoped_ptr<LostContextCallbackProxy> lost_context_callback_proxy_;
 
   class MemoryAllocationCallbackProxy;
   scoped_ptr<MemoryAllocationCallbackProxy> memory_allocation_callback_proxy_;
 };
 
-}  // namespace content
+}  // namespace gpu
+}  // namespace webkit
 
-#endif  // CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER
+#endif  // WEBKIT_GPU_CONTEXT_PROVIDER_IN_PROCESS_H_