tree 1e35cd7dbcc772409711f712ede59a07d58cc686
parent 197a28064da950b08e1a63cdbd80b5cf145f2f11
author Shawn Pearce <sop@google.com> 1360179140 -0800
committer Shawn Pearce <sop@google.com> 1360179140 -0800

Do not cache RevCommit in keys of VisibilityCache

If we cache the RevCommit we could hold onto millions of RevCommit,
RevTree and RevCommit[] instances, bloating the server process heap.

Change-Id: I48a3aa758ad0b09eb1158c54f95ea7a6a53a97b5