Fix source code so it compiles on google3

This is a follow up to cr/65191596 which checked for String + array warnings.

Change-Id: Id70eaa32b63b838b03be21d632c7470039b6423f

src/com/android/launcher3/ShortcutInfo.java

@@ -27,6 +27,7 @@ import android.graphics.Bitmap;
 import android.util.Log;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 
 /**
  * Represents a launchable icon on the workspaces and in folders.
@@ -226,7 +227,7 @@ public class ShortcutInfo extends ItemInfo {
         return "ShortcutInfo(title=" + title.toString() + "intent=" + intent + "id=" + this.id
                 + " type=" + this.itemType + " container=" + this.container + " screen=" + screenId
                 + " cellX=" + cellX + " cellY=" + cellY + " spanX=" + spanX + " spanY=" + spanY
-                + " dropPos=" + dropPos + ")";
+                + " dropPos=" + Arrays.toString(dropPos) + ")";
     }
 
     public static void dumpShortcutInfoList(String tag, String label,