Convert FileRefImpl and URLRequestInfo to shared_impl.

ppapi/shared_impl/scoped_pp_resource.h

 // 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.
 
 #ifndef PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_
 #define PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_
 
 #include "ppapi/c/pp_resource.h"
 
 namespace ppapi {
 
 class Resource;
 
 // This is a version of scoped_refptr but for PP_Resources.
 class ScopedPPResource {
  public:
+  struct PassRef {};
+
   ScopedPPResource();
 
   // Takes one reference to the given resource.
   explicit ScopedPPResource(PP_Resource resource);
 
+  // Assumes responsibility for one ref that the resource already has.
+  explicit ScopedPPResource(const PassRef&, PP_Resource resource);
+
   // Helper to get the PP_Resource out of the given object and take a reference
   // to it.
   explicit ScopedPPResource(Resource* resource);
 
   // Implicit copy constructor allowed.
   ScopedPPResource(const ScopedPPResource& other);
 
   ~ScopedPPResource();
 
   ScopedPPResource& operator=(PP_Resource resource);
@@ skipping 12 matching lines @@
   // be unchanged.
   void CallAddRef();
   void CallRelease();
 
   PP_Resource id_;
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_SCOPED_RESOURCE_H_