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

Source/modules/encryptedmedia/MediaKeysController.h

Index: Source/modules/encryptedmedia/MediaKeysController.h
diff --git a/Source/modules/encryptedmedia/MediaKeysController.h b/Source/modules/encryptedmedia/MediaKeysController.h
index 2439639717515a75f05a824ad260c73cb6381593..e6c62931bc6e6c2e2ad2f7b6d98d5b3beff165e2 100644
--- a/Source/modules/encryptedmedia/MediaKeysController.h
+++ b/Source/modules/encryptedmedia/MediaKeysController.h
@@ -17,14 +17,13 @@ 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 { }