Adding color back to popup container.

For Color exctraction now occurs in groups:
- System shortcuts
- Deep shortcuts
- Notifications

For home setting popup, each DeepShortcutView will have its own
extracted color.

Bug: 188095443
Test: manual
Change-Id: I7e209f863ff180b8f017aeb2a73c6f1a51842e68

src/com/android/launcher3/notification/NotificationItemView.java

@@ -18,6 +18,7 @@ package com.android.launcher3.notification;
 
 import static com.android.launcher3.touch.SingleAxisSwipeDetector.HORIZONTAL;
 
+import android.animation.AnimatorSet;
 import android.app.Notification;
 import android.content.Context;
 import android.graphics.Color;
@@ -92,6 +93,15 @@ public class NotificationItemView {
         });
     }
 
+    /**
+     * Animates the background color to a new color.
+     * @param color The color to change to.
+     * @param animatorSetOut The AnimatorSet where we add the color animator to.
+     */
+    public void updateBackgroundColor(int color, AnimatorSet animatorSetOut) {
+        mMainView.updateBackgroundColor(color, animatorSetOut);
+    }
+
     public void addGutter() {
         if (mGutter == null) {
             mGutter = mPopupContainer.inflateAndAdd(R.layout.notification_gutter, mRootView);