Make a global enum to differentiate impl & proxy.

ppapi/proxy/ppb_pdf_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_pdf_proxy.h"
 
 #include <string.h>  // For memcpy.
 
 #include <map>
 
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
 #include "build/build_config.h"
 #include "ppapi/c/private/ppb_pdf.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_pdf_api.h"
 
 using ppapi::thunk::PPB_PDFFont_API;
 using ppapi::thunk::EnterResource;
 
 namespace ppapi {
 namespace proxy {
 
 class PrivateFontFile : public Resource,
                         public PPB_PDFFont_API {
  public:
-  PrivateFontFile(const HostResource& resource) : Resource(resource) {
+  PrivateFontFile(const HostResource& resource)
+      : Resource(OBJECT_IS_PROXY, resource) {
   }
   virtual ~PrivateFontFile() {}
 
   PPB_PDFFont_API* AsPPB_PDFFont_API() { return this; }
 
   // Sees if we have a cache of the font table and returns a pointer to it.
   // Returns NULL if we don't have it.
   std::string* GetFontTable(uint32_t table) const;
 
   std::string* AddFontTable(uint32_t table, const std::string& contents);
@@ skipping 143 matching lines @@
           font_file.host_resource(), table, NULL, &table_length))
     return;
 
   result->resize(table_length);
   ppb_pdf_impl_->GetFontTableForPrivateFontFile(font_file.host_resource(),
       table, const_cast<char*>(result->c_str()), &table_length);
 }
 
 }  // namespace proxy
 }  // namespace ppapi