Using xml-drawable and elevation as folder background

Change-Id: I21376bd3de8cd58c646d0898d5a8303af9057218
diff --git a/src/com/android/launcher3/DragView.java b/src/com/android/launcher3/DragView.java
index a4b6704..3eec3d9 100644
--- a/src/com/android/launcher3/DragView.java
+++ b/src/com/android/launcher3/DragView.java
@@ -129,6 +129,10 @@
         int ms = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
         measure(ms, ms);
         mPaint = new Paint(Paint.FILTER_BITMAP_FLAG);
+
+        if (Utilities.isLmpOrAbove()) {
+            setElevation(getResources().getDimension(R.dimen.drag_elevation));
+        }
     }
 
     /** Sets the scale of the view over the normal workspace icon size. */