setMicrophoneMute  328 media/base/android/java/src/org/chromium/media/AudioManagerAndroid.java             setMicrophoneMute(mSavedIsMicrophoneMute);
setMicrophoneMute  557 media/base/android/java/src/org/chromium/media/AudioManagerAndroid.java         mAudioManager.setMicrophoneMute(on);