Update MediaKeySession events to match latest EME spec

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 26ad01f7e48ad90b2b40f43e70996b7fc0e44695..b5d63d810f9c3a37a8b7128e8c0933cee73a7eb8 100644
--- a/Source/modules/encryptedmedia/MediaKeySession.h
+++ b/Source/modules/encryptedmedia/MediaKeySession.h
@@ -70,9 +70,10 @@ public:
 
     void enqueueEvent(PassRefPtr<Event>);
 
-    DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitkeyadded);
-    DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitkeyerror);
-    DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitkeymessage);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(error);

[ddorwin, 2014/01/07 23:44:41]

on* attributes do not exist in the WD, except for needkey, where it is necessary
to handle declarative cases. (Just FYI, using addEventListener() is preferred to
using such attributes.)

[jrummell, 2014/01/08 18:05:52]

Removed.

+    DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(ready);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(closed);
 
     virtual const AtomicString& interfaceName() const OVERRIDE;
     virtual ExecutionContext* executionContext() const OVERRIDE;
@@ -83,9 +84,10 @@ private:
     void addKeyTimerFired(Timer<MediaKeySession>*);
 
     // ContentDecryptionModuleSessionClient
-    virtual void keyAdded() OVERRIDE;
     virtual void keyError(MediaKeyErrorCode, unsigned long systemCode) OVERRIDE;

[ddorwin, 2014/01/07 23:44:41]

I think we should drop "key" here.

[jrummell, 2014/01/08 18:05:52]

Done.

     virtual void keyMessage(const unsigned char* message, size_t messageLength, const KURL& destinationURL) OVERRIDE;
+    virtual void keyReady() OVERRIDE;
+    virtual void keyClosed() OVERRIDE;
 
     String m_keySystem;
     RefPtr<MediaKeyError> m_error;