root/media/base/android/java/src/org/chromium/media/

[..]
  1. AudioManagerAndroid.java
  2. AudioRecordInput.java
  3. MediaCodecBridge.java
  4. MediaDrmBridge.java
  5. MediaPlayerBridge.java
  6. MediaPlayerListener.java
  7. UsbMidiDeviceAndroid.java
  8. UsbMidiDeviceFactoryAndroid.java
  9. VideoCapture.java
  10. VideoCaptureAndroid.java
  11. VideoCaptureFactory.java
  12. VideoCaptureTango.java
  13. WebAudioMediaCodecBridge.java
[..]