Update view colors on onOverlayChanged()

We were re-inflating some views, but not updating the colors everywhere
we needed. The Shelf, for example, had wrong background colors during
transitions because mNormalColor of notifications above it were kept
untouched.

Test: visual
Fixes: 178804239
Change-Id: Ieae0ceed99fd9c00b570a40438ce8313e481e3a4

packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java

@@ -1002,10 +1002,6 @@ public class NotificationShelf extends ActivatableNotificationView implements
         return false;
     }
 
-    public void onUiModeChanged() {
-        updateBackgroundColors();
-    }
-
     public void setController(NotificationShelfController notificationShelfController) {
         mController = notificationShelfController;
     }

packages/SystemUI/src/com/android/systemui/statusbar/notification/row/ActivatableNotificationView.java

@@ -191,7 +191,10 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
         initDimens();
     }
 
-    protected void updateBackgroundColors() {
+    /**
+     * Reload background colors from resources and invalidate views.
+     */
+    public void updateBackgroundColors() {
         updateColors();
         initBackground();
         updateBackgroundTint();

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java

@@ -622,7 +622,12 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
         mBgColor = Utils.getColorAttr(mContext, android.R.attr.colorBackgroundFloating)
                 .getDefaultColor();
         updateBackgroundDimming();
-        mShelf.onUiModeChanged();
+        for (int i = 0; i < getChildCount(); i++) {
+            View child = getChildAt(i);
+            if (child instanceof ActivatableNotificationView) {
+                ((ActivatableNotificationView) child).updateBackgroundColors();
+            }
+        }
     }
 
     @ShadeViewRefactor(RefactorComponent.DECORATOR)

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutController.java

@@ -223,6 +223,7 @@ public class NotificationStackScrollLayoutController {
             updateShowEmptyShadeView();
             mView.updateCornerRadius();
             mView.updateBgColor();
+            mView.updateDecorViews();
             mView.reinflateViews();
         }