Schedule session initialization in MediaKeys.

Source/modules/encryptedmedia/MediaKeySession.h

Index: Source/modules/encryptedmedia/MediaKeySession.h
diff --git a/Source/modules/encryptedmedia/MediaKeySession.h b/Source/modules/encryptedmedia/MediaKeySession.h
index 45072199301fd42012c494d5aba33a931f055356..30b444f20fa6fbe7eda57d277e34df06554b5cce 100644
--- a/Source/modules/encryptedmedia/MediaKeySession.h
+++ b/Source/modules/encryptedmedia/MediaKeySession.h
@@ -79,7 +79,6 @@ public:
 
 private:
     MediaKeySession(ExecutionContext*, ContentDecryptionModule*, MediaKeys*);
-    void initializeNewSessionTimerFired(Timer<MediaKeySession>*);
     void updateTimerFired(Timer<MediaKeySession>*);
 
     // ContentDecryptionModuleSessionClient
@@ -94,16 +93,6 @@ private:
     // Used to remove the reference from the parent MediaKeys when close()'d.
     MediaKeys* m_keys;
 
-    // FIXME: Check whether |initData| can be changed by JS. Maybe we should not pass it as a pointer.
-    // FIXME: Move the queue and timer to MediaKeys.
-    struct InitializeNewSessionData {
-        InitializeNewSessionData(const String& mimeType, Uint8Array* initData) : mimeType(mimeType), initData(initData) { }
-        String mimeType;
-        RefPtr<Uint8Array> initData;
-    };
-    Deque<InitializeNewSessionData> m_pendingInitializeNewSessionData;
-    Timer<MediaKeySession> m_initializeNewSessionTimer;
-
     Deque<RefPtr<Uint8Array> > m_pendingKeys;
     Timer<MediaKeySession> m_updateTimer;
 };