Chrome Version: 3233.0
OS: ChromeOS

What steps will reproduce the problem?
exo_unittests --mash

What is the expected result?
Tests pass

What happens instead?
142 out 146 tests crash with a stack trace like this:

Received signal 11 SEGV_MAPERR 000000000000
#0 0x7f183b07de4d base::debug::StackTrace::StackTrace()
#1 0x7f183b07c3cc base::debug::StackTrace::StackTrace()
#2 0x7f183b07d847 base::debug::(anonymous namespace)::StackDumpSignalHandler()
#3 0x7f183b7b0330 <unknown>
#4 0x0000005e5659 exo::WMHelperAsh::WMHelperAsh()
#5 0x00000088c6ae exo::test::ExoTestBase::SetUp()