Replace context parenting by sharing through mailboxes

ppapi/proxy/ppapi_command_buffer_proxy.h

 // Copyright (c) 2012 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 PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
 #define PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
 
 #include "base/callback.h"
 #include "base/hash_tables.h"
 #include "gpu/command_buffer/common/command_buffer.h"
@@ skipping 14 matching lines @@
  public:
   PpapiCommandBufferProxy(const HostResource& resource,
                           ProxyChannel* channel);
   virtual ~PpapiCommandBufferProxy();
 
   void ReportChannelError();
 
   // CommandBufferProxy implementation:
   virtual int GetRouteID() const OVERRIDE;
   virtual bool Echo(const base::Closure& callback) OVERRIDE;
-  virtual bool SetParent(CommandBufferProxy* parent_command_buffer,
-                         uint32 parent_texture_id) OVERRIDE;
+  virtual bool ProduceFrontBuffer(const gpu::Mailbox& mailbox) OVERRIDE;
   virtual void SetChannelErrorCallback(const base::Closure& callback) OVERRIDE;
 
   // gpu::CommandBuffer implementation:
   virtual bool Initialize();
   virtual State GetState();
   virtual State GetLastState();
   virtual int32 GetLastToken();
   virtual void Flush(int32 put_offset);
   virtual State FlushSync(int32 put_offset, int32 last_known_get);
   virtual void SetGetBuffer(int32 transfer_buffer_id);
@@ skipping 20 matching lines @@
 
   base::Closure channel_error_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PpapiCommandBufferProxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif // PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_