MediaCodec: Added E-AC3 mime type (@hide).

Bug: 17883772
Change-Id: I48b2ab64812d860bb1a01d0a14e10690b86c4519
diff --git a/media/java/android/media/MediaFormat.java b/media/java/android/media/MediaFormat.java
index 8faa75c..4356a3e 100644
--- a/media/java/android/media/MediaFormat.java
+++ b/media/java/android/media/MediaFormat.java
@@ -106,6 +106,10 @@
     public static final String MIMETYPE_AUDIO_FLAC = "audio/flac";
     public static final String MIMETYPE_AUDIO_MSGSM = "audio/gsm";
     public static final String MIMETYPE_AUDIO_AC3 = "audio/ac3";
+    /**
+     * @hide
+     */
+    public static final String MIMETYPE_AUDIO_EAC3 = "audio/eac3";
 
     /**
      * MIME type for WebVTT subtitle data.