Revert of Remove unnecessary uses of GarbageCollectedFinalized<>.

third_party/WebKit/Source/core/fileapi/FileReader.cpp

 /*
  * Copyright (C) 2010 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 51 matching lines @@
 }
 
 } // namespace
 
 // Embedders like chromium limit the number of simultaneous requests to avoid
 // excessive IPC congestion. We limit this to 100 per thread to throttle the
 // requests (the value is arbitrarily chosen).
 static const size_t kMaxOutstandingRequestsPerThread = 100;
 static const double progressNotificationIntervalMS = 50;
 
-class FileReader::ThrottlingController final : public GarbageCollected<FileReader::ThrottlingController>, public Supplement<ExecutionContext> {
+class FileReader::ThrottlingController final : public GarbageCollectedFinalized<FileReader::ThrottlingController>, public Supplement<ExecutionContext> {
     USING_GARBAGE_COLLECTED_MIXIN(FileReader::ThrottlingController);
 public:
     static ThrottlingController* from(ExecutionContext* context)
     {
         if (!context)
             return 0;
 
         ThrottlingController* controller = static_cast<ThrottlingController*>(Supplement<ExecutionContext>::from(*context, supplementName()));
         if (!controller) {
             controller = new ThrottlingController;
             provideTo(*context, supplementName(), controller);
         }
         return controller;
     }
 
+    ~ThrottlingController() { }
+
     enum FinishReaderType { DoNotRunPendingReaders, RunPendingReaders };
 
     static void pushReader(ExecutionContext* context, FileReader* reader)
     {
         ThrottlingController* controller = from(context);
         if (!controller)
             return;
 
         InspectorInstrumentation::asyncTaskScheduled(context, "FileReader", reader, true);
         controller->pushReader(reader);
@@ skipping 360 matching lines @@
 }
 
 DEFINE_TRACE(FileReader)
 {
     visitor->trace(m_error);
     EventTargetWithInlineData::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink