am 6da6b0e4: Merge "Fix race condition in WeakHashMapTest." into jb-dev automerge: 62538d8  -s ours automerge: 8806a8e automerge: 81598a5

* commit '6da6b0e4a410cb3bbbbcf56cba742ba881ca1b47':
  Fix race condition in WeakHashMapTest.