Remove the old type system for proxied resources. These were no longer being used.

ppapi/proxy/ppb_buffer_proxy.h

 // Copyright (c) 2011 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_PPB_BUFFER_PROXY_H_
 #define PPAPI_PPB_BUFFER_PROXY_H_
 
 #include "base/shared_memory.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/thunk/ppb_buffer_api.h"
 
 struct PPB_Buffer_Dev;
 
 namespace pp {
 namespace proxy {
 
 class HostResource;
 
 class Buffer : public ppapi::thunk::PPB_Buffer_API,
                public PluginResource {
  public:
   Buffer(const HostResource& resource,
          const base::SharedMemoryHandle& shm_handle,
          uint32_t size);
   virtual ~Buffer();
 
-  // Resource overrides.
-  virtual Buffer* AsBuffer() OVERRIDE;
-
   // ResourceObjectBase overrides.
   virtual ppapi::thunk::PPB_Buffer_API* AsPPB_Buffer_API() OVERRIDE;
 
   // PPB_Buffer_API implementation.
   virtual PP_Bool Describe(uint32_t* size_in_bytes) OVERRIDE;
   virtual PP_Bool IsMapped() OVERRIDE;
   virtual void* Map() OVERRIDE;
   virtual void Unmap() OVERRIDE;
 
  private:
@@ skipping 30 matching lines @@
   void OnMsgCreate(PP_Instance instance,
                    uint32_t size,
                    HostResource* result_resource,
                    base::SharedMemoryHandle* result_shm_handle);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PPB_BUFFER_PROXY_H_