Fix slow playback of 1-channel MP3 and AAC files for WebAudio on Android

media/base/android/webaudio_media_codec_bridge.h

 // 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.
 
 #ifndef MEDIA_BASE_ANDROID_WEBAUDIO_MEDIA_CODEC_BRIDGE_H_
 #define MEDIA_BASE_ANDROID_WEBAUDIO_MEDIA_CODEC_BRIDGE_H_
 
 #include <jni.h>
 
 #include "base/file_descriptor_posix.h"
@@ skipping 23 matching lines @@
   // Start MediaCodec to process the encoded data in
   // |encoded_audio_handle|. The PCM samples are sent to |pcm_output|.
   static void RunWebAudioMediaCodec(
       base::SharedMemoryHandle encoded_audio_handle,
       base::FileDescriptor pcm_output,
       uint32_t data_size);
 
   void OnChunkDecoded(JNIEnv* env,
                       jobject /*java object*/,
                       jobject buf,
-                      jint buf_size);
+                      jint buf_size,
+                      jint input_channel_count,
+                      jint output_channel_count);
 
   void InitializeDestination(JNIEnv* env,
                              jobject /*java object*/,
                              jint channel_count,
                              jint sample_rate,
                              jlong duration_us);
 
  private:
   // Handles MediaCodec processing of the encoded data in
   // |encoded_audio_handle_| and sends the pcm data to |pcm_output_|.
@@ skipping 14 matching lines @@
   int pcm_output_;
 
   // The length of the encoded data.
   uint32_t data_size_;
 
   DISALLOW_COPY_AND_ASSIGN(WebAudioMediaCodecBridge);
 };
 
 }  // namespace media
 #endif  // MEDIA_BASE_ANDROID_WEBAUDIO_MEDIA_CODEC_BRIDGE_H_