Support creating secure decoder in MediaCodecBridge.

media/base/android/java/src/org/chromium/media/MediaCodecBridge.java

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.media;
 
 import android.media.AudioFormat;
 import android.media.AudioManager;
 import android.media.AudioTrack;
 import android.media.MediaCodec;
@@ skipping 123 matching lines @@
         assert(mediaCodec != null);
         mMediaCodec = mediaCodec;
         mLastPresentationTimeUs = 0;
         mFlushed = true;
     }
 
     @CalledByNative
     private static MediaCodecBridge create(String mime, boolean isSecure) {
         MediaCodec mediaCodec = null;
         try {
-            if (isSecure) {
+            // |isSecure| only applies to video decoders.
+            if (mime.startsWith("video") && isSecure) {
                 mediaCodec = MediaCodec.createByCodecName(getSecureDecoderNameForMime(mime));
             } else {
                 mediaCodec = MediaCodec.createDecoderByType(mime);
             }
         } catch (Exception e) {
             Log.e(TAG, "Failed to create MediaCodec " + e.toString());
         }
 
         if (mediaCodec == null) {
             return null;
@@ skipping 243 matching lines @@
     }
 
     private void resetLastPresentationTimeIfNeeded(long presentationTimeUs) {
         if (mFlushed) {
             mLastPresentationTimeUs =
                     Math.max(presentationTimeUs - MAX_PRESENTATION_TIMESTAMP_SHIFT_US, 0);
             mFlushed = false;
         }
     }
 }