Merge cherrypicks of [16480615] into sc-v2-release.

    private final Runnable mKeyguardGoingAwayRunnable = new Runnable() {

        @Override

        public void run() {

            // If the keyguard is already going away, or it's about to because we are going to

            // trigger the going-away remote animation to show the surface behind, don't do it

            // again. That will cause the current animation to be cancelled unnecessarily.

            if (mKeyguardStateController.isKeyguardGoingAway()

                    || mSurfaceBehindRemoteAnimationRequested

                    || mSurfaceBehindRemoteAnimationRunning) {

                return;

            }

            Trace.beginSection("KeyguardViewMediator.mKeyGuardGoingAwayRunnable");

            if (DEBUG) Log.d(TAG, "keyguardGoingAway");

            mKeyguardViewControllerLazy.get().keyguardGoingAway();