Change initDataType and sessionType to be enums

Source/modules/encryptedmedia/MediaKeys.h

 /*
  * Copyright (C) 2013 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #ifndef MediaKeys_h
 #define MediaKeys_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/DOMArrayPiece.h"
 #include "platform/Timer.h"
+#include "public/platform/WebEncryptedMediaTypes.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebVector.h"
 #include "wtf/Forward.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ExceptionState;
 class ExecutionContext;
 class MediaKeySession;
 class ScriptState;
 class WebContentDecryptionModule;
 
 // References are held by JS and HTMLMediaElement.
 // The WebContentDecryptionModule has the same lifetime as this object.
 class MediaKeys : public GarbageCollectedFinalized<MediaKeys>, public ContextLifecycleObserver, public ScriptWrappable {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaKeys);
     DEFINE_WRAPPERTYPEINFO();
 public:
-    MediaKeys(ExecutionContext*, const String& keySystem, const blink::WebVector<blink::WebString>& supportedSessionTypes, PassOwnPtr<WebContentDecryptionModule>);
+    MediaKeys(ExecutionContext*, const String& keySystem, const blink::WebVector<WebEncryptedMediaSessionType>& supportedSessionTypes, PassOwnPtr<WebContentDecryptionModule>);
     virtual ~MediaKeys();
 
     // FIXME: This should be removed after crbug.com/425186 is fully
     // implemented.
     const String& keySystem() const { return m_keySystem; }
 
-    MediaKeySession* createSession(ScriptState*, const String& sessionType, ExceptionState&);
+    MediaKeySession* createSession(ScriptState*, const String& sessionTypeString, ExceptionState&);
 
     ScriptPromise setServerCertificate(ScriptState*, const DOMArrayPiece& serverCertificate);
 
     blink::WebContentDecryptionModule* contentDecryptionModule();
 
     DECLARE_VIRTUAL_TRACE();
 
     // ContextLifecycleObserver
     virtual void contextDestroyed() override;
 
 private:
     class PendingAction;
 
+    bool sessionTypeSupported(WebEncryptedMediaSessionType);
     void timerFired(Timer<MediaKeys>*);
 
     const String m_keySystem;
-    const blink::WebVector<blink::WebString> m_supportedSessionTypes;
+    const blink::WebVector<WebEncryptedMediaSessionType> m_supportedSessionTypes;
     OwnPtr<blink::WebContentDecryptionModule> m_cdm;
 
     HeapDeque<Member<PendingAction>> m_pendingActions;
     Timer<MediaKeys> m_timer;
 };
 
 } // namespace blink
 
 #endif // MediaKeys_h