Review comments followup

These are review comments followup from ag/17399997

Bug: b/218187058
Test: manually test thet Launcher3 features work correctly
Change-Id: I9865a37c1ed663370dc28e7678994f3d961e3cd1
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 3cc8a81..923e614 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2360,7 +2360,7 @@
         // Get the list of added items and intersect them with the set of items here
         final Collection<Animator> bounceAnims = new ArrayList<>();
         boolean canAnimatePageChange = canAnimatePageChange();
-        Workspace workspace = mWorkspace;
+        Workspace<?> workspace = mWorkspace;
         int newItemsScreenId = -1;
         int end = items.size();
         View newView = null;