Unifying toString() method for various ItemInfo subclasses

Change-Id: I7cde42f0df412e2877fb93c77e74ee56a25edead
diff --git a/src/com/android/launcher3/PendingAddItemInfo.java b/src/com/android/launcher3/PendingAddItemInfo.java
index 1aaf85b..31820d7 100644
--- a/src/com/android/launcher3/PendingAddItemInfo.java
+++ b/src/com/android/launcher3/PendingAddItemInfo.java
@@ -29,4 +29,9 @@
      * The component that will be created.
      */
     public ComponentName componentName;
+
+    @Override
+    protected String dumpProperties() {
+        return super.dumpProperties() + " componentName=" + componentName;
+    }
 }