Merge "AudioTrack: fix position callback after restore"

    // take the frames that will be lost by track recreation into account in saved position

    size_t position = mProxy->getPosition() + mProxy->getFramesFilled();

    mNewPosition = position + mUpdatePeriod;

    size_t bufferPosition = mStaticProxy != NULL ? mStaticProxy->getBufferPosition() : 0;

    result = createTrack_l(mStreamType,

                           mSampleRate,