Merge "Revert "Clear main looper before VolumeDialogImplTest"" into udc-qpr-dev

import android.app.KeyguardManager;

import android.content.res.Configuration;

import android.media.AudioManager;

import android.os.Handler;

import android.os.SystemClock;

import android.testing.AndroidTestingRunner;

import android.testing.TestableLooper;

        mTestableLooper = TestableLooper.get(this);

        allowTestableLooperAsMainThread();

        // Ensure previous tests have not left messages on main looper

        Handler localHandler = new Handler(mTestableLooper.getLooper());

        localHandler.removeCallbacksAndMessages(null);

        when(mPostureController.getDevicePosture())

                .thenReturn(DevicePostureController.DEVICE_POSTURE_CLOSED);