PPAPI/NaCl: Make NaClIPCAdapter transfer handles more generally

ppapi/proxy/ppb_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_PPB_BUFFER_PROXY_H_
 #define PPAPI_PROXY_PPB_BUFFER_PROXY_H_
 
 #include "base/shared_memory.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/interface_proxy.h"
+#include "ppapi/proxy/serialized_structs.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/thunk/ppb_buffer_api.h"
 
 namespace ppapi {
 
 class HostResource;
 
 namespace proxy {
 
 class Buffer : public thunk::PPB_Buffer_API, public Resource {
@@ skipping 34 matching lines @@
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
   static const ApiID kApiID = API_ID_PPB_BUFFER;
 
  private:
   // Message handlers.
   void OnMsgCreate(PP_Instance instance,
                    uint32_t size,
                    HostResource* result_resource,
-                   base::SharedMemoryHandle* result_shm_handle);
+                   ppapi::proxy::SerializedHandle* result_shm_handle);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_BUFFER_PROXY_H_