tree 87f074f452702557db365d06e637beb2759eb000
parent 25ae7ebfd227869dd12f807047c56177d0bf645b
author Ian Rogers <irogers@google.com> 1366326675 -0700
committer Ian Rogers <irogers@google.com> 1366326969 -0700

Thread pool tidying.

Make fields const. Fix memory leak in gtest caused by not allowing thread pool
to empty tasks.

Change-Id: I32b20dee17eab03443c4bd1f3cc102c4409d1ab9