Simplfy Pepepr2 bolierplate code.

webkit/glue/plugins/pepper_directory_reader.cc

 // Copyright (c) 2010 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/glue/plugins/pepper_directory_reader.h"
 
 #include "base/logging.h"
 #include "third_party/ppapi/c/pp_completion_callback.h"
 #include "third_party/ppapi/c/pp_errors.h"
 #include "webkit/glue/plugins/pepper_file_ref.h"
 #include "webkit/glue/plugins/pepper_resource_tracker.h"
 
 namespace pepper {
 
 namespace {
 
 PP_Resource Create(PP_Resource directory_ref_id) {
   scoped_refptr<FileRef> directory_ref(
-      ResourceTracker::Get()->GetAsFileRef(directory_ref_id));
+      Resource::GetAs<FileRef>(directory_ref_id));
   if (!directory_ref.get())
     return 0;
 
   DirectoryReader* reader = new DirectoryReader(directory_ref);
   reader->AddRef();  // AddRef for the caller;
   return reader->GetResource();
 }
 
 bool IsDirectoryReader(PP_Resource resource) {
-  return !!ResourceTracker::Get()->GetAsDirectoryReader(resource).get();
+  return !!Resource::GetAs<DirectoryReader>(resource).get();
 }
 
 int32_t GetNextEntry(PP_Resource reader_id,
                      PP_DirectoryEntry* entry,
                      PP_CompletionCallback callback) {
   scoped_refptr<DirectoryReader> reader(
-      ResourceTracker::Get()->GetAsDirectoryReader(reader_id));
+      Resource::GetAs<DirectoryReader>(reader_id));
   if (!reader.get())
     return PP_Error_BadResource;
 
   return reader->GetNextEntry(entry, callback);
 }
 
 const PPB_DirectoryReader ppb_directoryreader = {
   &Create,
   &IsDirectoryReader,
   &GetNextEntry
@@ skipping 13 matching lines @@
   return &ppb_directoryreader;
 }
 
 int32_t DirectoryReader::GetNextEntry(PP_DirectoryEntry* entry,
                                       PP_CompletionCallback callback) {
   NOTIMPLEMENTED();  // TODO(darin): Implement me!
   return PP_Error_Failed;
 }
 
 }  // namespace pepper