tree 5fdd432c399f143484c6ddaec4ee03749a317f05
parent b20ae8125c51eb364ba24f3a09637e4e0bffc8b2
author Yingdi Yu <yuyingdi@gmail.com> 1408124743 -0700
committer Yingdi Yu <yuyingdi@gmail.com> 1410333835 -0700

Simplify Leaf and its sub-classes.

Change-Id: I711db26bedee2bebdd39ffd8b637fa8918c16ff9