Add "throws IOException" to MediaCodec constructors (8)

Change to add "throws IOException" to android.media.MediaCodec
(createByCodecName|createDecoderByType|createEncoderByType).  The exception was
previously thrown through the native JNI, but not explicitly declared.

Requires changes to existing code for declaration compatibility.

Bug: 11364276
Change-Id: I6487408709342b390bac2b935f4642d4aaf36102
Signed-off-by: Andy Hung <hunga@google.com>

proprietary/samplePlayer/src/com/widevine/demo/MediaCodecView.java

@@ -499,7 +499,8 @@ class MediaCodecView extends SurfaceView
     }
 
     private void addTrack(
-            int trackIndex, MediaFormat format, boolean encrypted) {
+            int trackIndex, MediaFormat format, boolean encrypted) 
+            throws IOException {
         String mime = format.getString(MediaFormat.KEY_MIME);
 
         boolean isVideo = mime.startsWith("video/");