tree c6676fd887d88565b2dac39d266ff8f3f81df5b2
parent efdbac54eef6209772dadf7d24c7b3d37dcc8713
author Shih-wei Liao <sliao@google.com> 1317928264 -0700
committer Shih-wei Liao <sliao@google.com> 1317944837 -0700

Add an interface to Space, so Heap no longer needs to be friend of Space.

Also, fix and add comments with respect to utilization.

Change-Id: Ia9d27cc16d2b85ac97a48fee80567829f41224f4