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

webkit/plugins/ppapi/ppb_file_io_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 "webkit/plugins/ppapi/ppb_file_io_impl.h"
 
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/file_util_proxy.h"
 #include "base/message_loop_proxy.h"
@@ skipping 296 matching lines @@
 }
 
 void PPB_FileIO_Impl::RegisterCallback(OperationType op,
                                        PP_CompletionCallback callback,
                                        char* read_buffer) {
   DCHECK(callback.func);
   DCHECK(pending_op_ == OPERATION_NONE ||
          (pending_op_ != OPERATION_EXCLUSIVE && pending_op_ == op));
 
   CallbackEntry entry;
-  PP_Resource resource_id = GetReferenceNoAddRef();
-  CHECK(resource_id);
   entry.callback = new TrackedCompletionCallback(
-      instance()->module()->GetCallbackTracker(), resource_id, callback);
+      instance()->module()->GetCallbackTracker(), pp_resource(), callback);
   entry.read_buffer = read_buffer;
 
   callbacks_.push(entry);
   pending_op_ = op;
 }
 
 void PPB_FileIO_Impl::RunAndRemoveFirstPendingCallback(int32_t result) {
   DCHECK(!callbacks_.empty());
 
   CallbackEntry front = callbacks_.front();
@@ skipping 107 matching lines @@
   if (error_code != base::PLATFORM_FILE_OK) {
     RunAndRemoveFirstPendingCallback(
         PlatformFileErrorToPepperError(error_code));
   } else {
     RunAndRemoveFirstPendingCallback(bytes_written);
   }
 }
 
 }  // namespace ppapi
 }  // namespace webkit