Merge changes Ib2bc8419,Ia41cb0e3,I43bfbc41 into sc-v2-dev

* changes:
  Animate PredictedAppIcon when its icon changes
  Add "wave" animation when entering taskbar edu
  Add slot machine animation for PredictedAppIcon

quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java

@@ -121,6 +121,10 @@ public class TaskbarViewController {
         return mTaskbarView.getIconLayoutBounds();
     }
 
+    public View[] getIconViews() {
+        return mTaskbarView.getIconViews();
+    }
+
     public AnimatedFloat getTaskbarIconScaleForStash() {
         return mTaskbarIconScaleForStash;
     }