Remove duplicated provideMediaKeysTo() in MediaKeysClient.h

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 ab0f2a18eee4eb65e5362929f844aa0e8f272968..ccf0f7560099eb7bec4102f68da6a99de3157d99 100644
--- a/Source/modules/encryptedmedia/MediaKeysController.h
+++ b/Source/modules/encryptedmedia/MediaKeysController.h
@@ -20,17 +20,19 @@ class MediaKeysClient;
 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 void provideMediaKeysTo(Page&, PassOwnPtr<MediaKeysClient>);
     static MediaKeysController* from(Page* page) { return static_cast<MediaKeysController*>(WillBeHeapSupplement<Page>::from(page, supplementName())); }
 
     virtual void trace(Visitor* visitor) OVERRIDE { WillBeHeapSupplement<Page>::trace(visitor); }
 
 private:
-    explicit MediaKeysController(MediaKeysClient*);
+    explicit MediaKeysController(PassOwnPtr<MediaKeysClient>);
     static const char* supplementName();
-    MediaKeysClient* m_client;
+    OwnPtr<MediaKeysClient> m_client;
 };
 
 } // namespace WebCore