[Pepper GL] Use shared state to fix a memory leak in MapSub GL extension.

ppapi/proxy/ppb_graphics_3d_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_PPB_GRAPHICS_3D_PROXY_H_
 #define PPAPI_PROXY_PPB_GRAPHICS_3D_PROXY_H_
 
 #include <vector>
 
 #include "base/memory/shared_memory.h"
@@ skipping 14 matching lines @@
 namespace proxy {
 
 class SerializedHandle;
 class PpapiCommandBufferProxy;
 
 class PPAPI_PROXY_EXPORT Graphics3D : public PPB_Graphics3D_Shared {
  public:
   explicit Graphics3D(const HostResource& resource);
   virtual ~Graphics3D();
 
-  bool Init(gpu::gles2::GLES2Implementation* share_gles2);
+  bool Init(gpu::gles2::GLES2Implementation* share_gles2,
+            const SerializedHandle& shared_state);
 
   // Graphics3DTrusted API. These are not implemented in the proxy.
   virtual PP_Bool SetGetBuffer(int32_t shm_id) OVERRIDE;
   virtual PP_Bool Flush(int32_t put_offset) OVERRIDE;
   virtual scoped_refptr<gpu::Buffer> CreateTransferBuffer(uint32_t size,
                                                           int32* id) OVERRIDE;
   virtual PP_Bool DestroyTransferBuffer(int32_t id) OVERRIDE;
   virtual gpu::CommandBuffer::State WaitForTokenInRange(int32_t start,
                                                         int32_t end) OVERRIDE;
   virtual gpu::CommandBuffer::State WaitForGetOffsetInRange(int32_t start,
@@ skipping 26 matching lines @@
 
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
   static const ApiID kApiID = API_ID_PPB_GRAPHICS_3D;
 
  private:
   void OnMsgCreate(PP_Instance instance,
                    HostResource share_context,
                    const std::vector<int32_t>& attribs,
-                   HostResource* result);
+                   HostResource* result,
+                   SerializedHandle* handle);
   void OnMsgSetGetBuffer(const HostResource& context,
                          int32 id);
   void OnMsgWaitForTokenInRange(const HostResource& context,
                                 int32 start,
                                 int32 end,
                                 gpu::CommandBuffer::State* state,
                                 bool* success);
   void OnMsgWaitForGetOffsetInRange(const HostResource& context,
                                     int32 start,
                                     int32 end,
@@ skipping 22 matching lines @@
   ProxyCompletionCallbackFactory<PPB_Graphics3D_Proxy> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Graphics3D_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_GRAPHICS_3D_PROXY_H_