Session API name change

Changed the name of a method in the session APIs.

Change-Id: I9b815f7d378367731e7ddd14785e520369f45c63
diff --git a/src/com/android/phone/PhoneGlobals.java b/src/com/android/phone/PhoneGlobals.java
index 08edc91..284125d 100644
--- a/src/com/android/phone/PhoneGlobals.java
+++ b/src/com/android/phone/PhoneGlobals.java
@@ -1103,7 +1103,7 @@
 
     private class SessionCallback extends MediaSession.Callback {
         @Override
-        public void onMediaButton(Intent intent) {
+        public void onMediaButtonEvent(Intent intent) {
             KeyEvent event = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
             if (VDBG) Log.d(LOG_TAG, "SessionCallback.onMediaButton()...  event = " + event);
             if ((event != null) && (event.getKeyCode() == KeyEvent.KEYCODE_HEADSETHOOK)) {