Merge "Protect against INCALL->RINGING transition in AudioManager" into lmp-dev

        Preconditions.checkState(hasFocus());

        int oldMode = mAudioManager.getMode();

        Log.v(this, "Request to change audio mode from %d to %d", oldMode, newMode);

        if (oldMode != newMode) {

            if (oldMode == AudioManager.MODE_IN_CALL && newMode == AudioManager.MODE_RINGTONE) {

                Log.i(this, "Transition from IN_CALL -> RINGTONE. Resetting to NORMAL first.");

                mAudioManager.setMode(AudioManager.MODE_NORMAL);

            }

            mAudioManager.setMode(newMode);

            mMostRecentlyUsedMode = newMode;

        }