Oilpan: Move all supplements of Page, Document, and WorkerClients to the managed heap.

Source/modules/encryptedmedia/MediaKeysController.h

 // Copyright 2014 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 MediaKeysController_h
 #define MediaKeysController_h
 
 #include "core/page/Page.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 class WebContentDecryptionModule;
 }
 
 namespace WebCore {
 
 class ExecutionContext;
 class MediaKeysClient;
 
-class MediaKeysController FINAL : public Supplement<Page> {
+class MediaKeysController FINAL : public NoBaseWillBeGarbageCollected<MediaKeysController>, public WillBeHeapSupplement<Page> {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaKeysController);
 public:
-    virtual ~MediaKeysController();
-
     PassOwnPtr<blink::WebContentDecryptionModule> createContentDecryptionModule(ExecutionContext*, const String& keySystem);
 
     static void provideMediaKeysTo(Page&, MediaKeysClient*);
-    static MediaKeysController* from(Page* page) { return static_cast<MediaKeysController*>(Supplement<Page>::from(page, supplementName())); }
+    static MediaKeysController* from(Page* page) { return static_cast<MediaKeysController*>(WillBeHeapSupplement<Page>::from(page, supplementName())); }
 
     virtual void trace(Visitor*) OVERRIDE { }
 
 private:
     explicit MediaKeysController(MediaKeysClient*);
     static const char* supplementName();
     MediaKeysClient* m_client;
 };
 
 } // namespace WebCore
 
 #endif // MediaKeysController_h