Make a global enum to differentiate impl & proxy.

ppapi/proxy/ppb_buffer_proxy.cc

 // 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.
 
 #include "ppapi/proxy/ppb_buffer_proxy.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/dev/ppb_buffer_dev.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_buffer_trusted_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/thunk/thunk.h"
 
 namespace ppapi {
 namespace proxy {
 
 Buffer::Buffer(const HostResource& resource,
                const base::SharedMemoryHandle& shm_handle,
                uint32_t size)
-    : Resource(resource),
+    : Resource(OBJECT_IS_PROXY, resource),
       shm_(shm_handle, false),
       size_(size),
       mapped_data_(NULL),
       map_count_(0) {
 }
 
 Buffer::~Buffer() {
   Unmap();
 }
 
@@ skipping 101 matching lines @@
 #elif defined(OS_POSIX)
       local_fd;
 #else
   #error Not implemented.
 #endif
   *result_shm_handle = dispatcher->ShareHandleWithRemote(platform_file, false);
 }
 
 }  // namespace proxy
 }  // namespace ppapi