Making some constants accessible

Change-Id: Id5caff8defe8ccc4a79e1c99b0040abb1750b3e1
diff --git a/src/com/android/launcher3/graphics/ShadowGenerator.java b/src/com/android/launcher3/graphics/ShadowGenerator.java
index 37fb4ec..9ea11a7 100644
--- a/src/com/android/launcher3/graphics/ShadowGenerator.java
+++ b/src/com/android/launcher3/graphics/ShadowGenerator.java
@@ -40,7 +40,7 @@
     public static final float BLUR_FACTOR = 0.5f/48;
 
     // Percent of actual icon size
-    private static final float KEY_SHADOW_DISTANCE = 1f/48;
+    public static final float KEY_SHADOW_DISTANCE = 1f/48;
     private static final int KEY_SHADOW_ALPHA = 61;
 
     private static final int AMBIENT_SHADOW_ALPHA = 30;