Enable the following tests back under ThreadSanitizer v2:
  ConditionVariableTest.LargeFastTaskTest
  ConditionVariableTest.MultiThreadConsumerTest
  ConditionVariableTest.TimeoutTest
  PosixDynamicThreadPoolTest.Complex
  PosixDynamicThreadPoolTest.ReuseIdle
  PosixDynamicThreadPoolTest.TwoActiveTasks

There's been a bug in the TSan runtime causing these tests to fail.

BUG=303007
TBR=jar@chromium.org

Review URL: https://codereview.chromium.org/27019012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229086 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229086