tree bfb0d98f1f7ddde67b42029d97a6ebce67ffede6
parent ae7b22d61df0aef471c50d56a06a7d4316daffc6
author Dianne Hackborn <hackbod@google.com> 1380930262 -0700
committer Dianne Hackborn <hackbod@google.com> 1380930262 -0700

Fix issue #11050678: Large memory leak in ActivityStack

Clear thumbnails from tasks that are removed from the recent tasks list.

Change-Id: I581d5baac9b5a3e046a654eb8448ff877dd2f120