AOD: Fix flicker at end of AOD2

Fixes a flicker at the end of pulsing out. Instead of the hard cut
we animate out and then hard cut to AOD1.

Change-Id: I64149bb734c10e07e3da2822548a4651b9fb48db
Fixes: 64077859
Test: Receive notification, let it time out; verify no flicker at end of fading out.

packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java

@@ -322,7 +322,7 @@ public class DozeScrimController {
             mHandler.removeCallbacks(mPulseOutExtended);
             if (DEBUG) Log.d(TAG, "Pulse out, mDozing=" + mDozing);
             if (!mDozing) return;
-            startScrimAnimation(true /* inFront */, mDozeParameters.getAlwaysOn() ? 0 : 1,
+            startScrimAnimation(true /* inFront */, 1,
                     mDozeParameters.getPulseOutDuration(),
                     Interpolators.ALPHA_IN, mPulseOutFinished);
         }
@@ -336,6 +336,9 @@ public class DozeScrimController {
 
             // Signal that the pulse is all finished so we can turn the screen off now.
             pulseFinished();
+            if (mDozeParameters.getAlwaysOn()) {
+                mScrimController.setDozeInFrontAlpha(0);
+            }
         }
     };
 }