Make a global enum to differentiate impl & proxy.

ppapi/proxy/ppb_image_data_proxy.cc

 // 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.
 
 #include "ppapi/proxy/ppb_image_data_proxy.h"
 
 #include <string.h>  // For memcpy
 
 #include <vector>
 
@@ skipping 11 matching lines @@
 #include "ppapi/thunk/thunk.h"
 #include "skia/ext/platform_canvas.h"
 #include "ui/gfx/surface/transport_dib.h"
 
 namespace ppapi {
 namespace proxy {
 
 ImageData::ImageData(const HostResource& resource,
                      const PP_ImageDataDesc& desc,
                      ImageHandle handle)
-    : Resource(resource),
+    : Resource(OBJECT_IS_PROXY, resource),
       desc_(desc) {
 #if defined(OS_WIN)
   transport_dib_.reset(TransportDIB::CreateWithHandle(handle));
 #else
   transport_dib_.reset(TransportDIB::Map(handle));
 #endif
 }
 
 ImageData::~ImageData() {
 }
@@ skipping 134 matching lines @@
     ImageHandle ih = ImageData::HandleFromInt(handle);
     *result_image_handle = dispatcher()->ShareHandleWithRemote(ih, false);
 #else
     *result_image_handle = ImageData::HandleFromInt(handle);
 #endif
   }
 }
 
 }  // namespace proxy
 }  // namespace ppapi