3/N The road to Material NEXT (scrim color events)

Reload scrim colors when overlays are applied.
They drive the system theme.

Bug: 173561906
Test: manual
Change-Id: I1b6e446e6f67c05f391f48e305f006dbdb39caf5

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

@@ -235,6 +235,11 @@ public class ScrimController implements ViewTreeObserver.OnPreDrawListener, Dump
                 ScrimController.this.onThemeChanged();
             }
 
+            @Override
+            public void onOverlayChanged() {
+                ScrimController.this.onThemeChanged();
+            }
+
             @Override
             public void onUiModeChanged() {
                 ScrimController.this.onThemeChanged();