Fixed a flashing when the affordances were launched

Because we can't draw it as source in that case.

Change-Id: I14039959a5fedbc57358e2e343a3d0d185dcec17
Fixes: 28735933
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BrightnessMirrorController.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BrightnessMirrorController.java
index ddded49..21d03fd 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BrightnessMirrorController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BrightnessMirrorController.java
@@ -53,7 +53,7 @@
 
     public void showMirror() {
         mBrightnessMirror.setVisibility(View.VISIBLE);
-        mStackScroller.setFadedOut(true);
+        mStackScroller.setFadingOut(true);
         mScrimBehind.animateViewAlpha(0.0f, TRANSITION_DURATION_OUT, Interpolators.ALPHA_OUT);
         outAnimation(mNotificationPanel.animate())
                 .withLayer();
@@ -67,7 +67,7 @@
                     @Override
                     public void run() {
                         mBrightnessMirror.setVisibility(View.INVISIBLE);
-                        mStackScroller.setFadedOut(false);
+                        mStackScroller.setFadingOut(false);
                     }
                 });
     }