Make a global enum to differentiate impl & proxy.

chrome/renderer/chrome_ppb_pdf_impl.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 "chrome/renderer/chrome_ppb_pdf_impl.h"
 
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/common/render_messages.h"
@@ skipping 30 matching lines @@
 using webkit::ppapi::PluginInstance;
 using WebKit::WebElement;
 using WebKit::WebView;
 using content::RenderThread;
 
 namespace chrome {
 
 #if defined(OS_LINUX) || defined(OS_OPENBSD)
 class PrivateFontFile : public ppapi::Resource {
  public:
-  PrivateFontFile(PP_Instance instance, int fd) : Resource(instance), fd_(fd) {
+  PrivateFontFile(PP_Instance instance, int fd)
+      : Resource(ppapi::OBJECT_IS_IMPL, instance),
+        fd_(fd) {
   }
   virtual ~PrivateFontFile() {
   }
 
   bool GetFontTable(uint32_t table,
                     void* output,
                     uint32_t* output_length) {
     size_t temp_size = static_cast<size_t>(*output_length);
     bool rv = content::GetFontTable(
         fd_, table, static_cast<uint8_t*>(output), &temp_size);
@@ skipping 313 matching lines @@
   &SaveAs,
   &Print
 };
 
 // static
 const PPB_PDF* PPB_PDF_Impl::GetInterface() {
   return &ppb_pdf;
 }
 
 }  // namespace chrome