Use vsync choreographer when moving PIP.

import android.os.Handler;

import android.os.RemoteException;

import android.util.Log;

import android.view.Choreographer;

import android.view.animation.Interpolator;

import com.android.internal.os.BackgroundThread;

import com.android.internal.policy.PipSnapAlgorithm;

import com.android.internal.view.SurfaceFlingerVsyncChoreographer;

import com.android.systemui.recents.misc.SystemServicesProxy;

import com.android.systemui.statusbar.FlingAnimationUtils;

    private Context mContext;

    private IActivityManager mActivityManager;

    private SurfaceFlingerVsyncChoreographer mVsyncChoreographer;

    private Handler mHandler;

    private PipSnapAlgorithm mSnapAlgorithm;

        mActivityManager = activityManager;

        mSnapAlgorithm = snapAlgorithm;

        mFlingAnimationUtils = flingAnimationUtils;

        mVsyncChoreographer = new SurfaceFlingerVsyncChoreographer(mHandler, mContext.getDisplay(),

                Choreographer.getInstance());

        onConfigurationChanged();

    }

     */

    private void resizePipUnchecked(Rect toBounds) {

        if (!toBounds.equals(mBounds)) {

            mHandler.post(() -> {

            mVsyncChoreographer.scheduleAtSfVsync(() -> {

                try {

                    mActivityManager.resizePinnedStack(toBounds, null /* tempPinnedTaskBounds */);

                    mBounds.set(toBounds);