Merge "Fixing regression in fast scroller animation." into ub-launcher3-burnaby

src/com/android/launcher3/BaseRecyclerView.java

@@ -289,6 +289,13 @@ public class BaseRecyclerView extends RecyclerView
         invalidateFastScroller(mFastScrollerBounds);
     }
 
+    /**
+     * Returns the fast scroller alpha.
+     */
+    public float getFastScrollerAlpha() {
+        return mFastScrollAlpha;
+    }
+
     /**
      * Maps the touch (from 0..1) to the adapter position that should be visible.
      * <p>Override in each subclass of this base class.