suppress race ProcessSingleton::LinuxWatcher::SocketReader::FinishWithACK TBR=jabdelmalek@google.com BUG=121574 TEST=waterfall.sh
suppress race ProcessSingleton::LinuxWatcher::SocketReader::FinishWithACK
TBR=jabdelmalek@google.com
BUG=121574
TEST=waterfall.sh

Review URL: https://chromiumcodereview.appspot.com/10365003

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@135150 0039d316-1c4b-4281-b951-d872f2087c98

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