Add a unified resource tracker shared between the proxy and the impl.

chrome/renderer/chrome_ppb_pdf_impl.cc

Index: chrome/renderer/chrome_ppb_pdf_impl.cc
diff --git a/chrome/renderer/chrome_ppb_pdf_impl.cc b/chrome/renderer/chrome_ppb_pdf_impl.cc
index bd8b4c0047e29ef56b428f82ed3f5cf5cc7f0517..8f4f31a74185691b4652ee68643df4d3a300ff00 100644
--- a/chrome/renderer/chrome_ppb_pdf_impl.cc
+++ b/chrome/renderer/chrome_ppb_pdf_impl.cc
@@ -13,6 +13,9 @@
 #include "grit/webkit_strings.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/private/ppb_pdf.h"
+#include "ppapi/shared_impl/resource.h"
+#include "ppapi/shared_impl/resource_tracker.h"
+#include "ppapi/shared_impl/tracker_base.h"
 #include "ppapi/shared_impl/var.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/skia/include/core/SkBitmap.h"
@@ -208,14 +211,12 @@ bool GetFontTableForPrivateFontFile(PP_Resource font_file,
                                     void* output,
                                     uint32_t* output_length) {
 #if defined(OS_LINUX)
-  scoped_refptr<webkit::ppapi::Resource>
-      resource(webkit::ppapi::ResourceTracker::Get()->GetResource(font_file));
-  if (!resource.get())
+  ppapi::Resource* resource =
+      ppapi::TrackerBase::Get()->GetResourceTracker()->GetResource(font_file);
+  if (!resource)
     return false;
 
-  PrivateFontFile* font = static_cast<PrivateFontFile*>(resource.get());
-  if (!font)
-    return false;
+  PrivateFontFile* font = static_cast<PrivateFontFile*>(resource);
   return font->GetFontTable(table, output, output_length);
 #else
   return false;