Putting back generics for Workspace

This got over-written in merging files

Bug: b/218186705
Test: Manually tested Launcher3 works.
Change-Id: I55287e110d067a338204924337091ead044b34ec
diff --git a/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java b/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
index 462daf5..12eb837 100644
--- a/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
+++ b/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
@@ -313,7 +313,7 @@
      * Find empty space on the workspace and returns the screenId.
      */
     protected int findSpaceOnWorkspace(ItemInfo info, int[] outCoordinates) {
-        Workspace workspace = mContext.getWorkspace();
+        Workspace<?> workspace = mContext.getWorkspace();
         IntArray workspaceScreens = workspace.getScreenOrder();
         int screenId;