Simplifying add to workspace by not going through the worker thread

Change-Id: I3260786bee257aea93ade49e6fa18008232addbe
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index 85653be..8391980 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -3294,4 +3294,8 @@
     public boolean lastDownOnOccupiedCell() {
         return mLastDownOnOccupiedCell;
     }
+
+    public boolean findVacantCell(int spanX, int spanY, int[] outXY) {
+        return Utilities.findVacantCell(outXY, spanX, spanY, mCountX, mCountY, mOccupied);
+    }
 }