This test sometimes crashes like so:

[81226:33539:0509/085510.942143:WARNING:audio_sync_reader.cc(193)] AudioSyncReader::Read timed out, audio glitch count=10
BrowserTestBase received signal: Segmentation fault: 11. Backtrace:
0   browser_tests                       0x000000010fac954c base::debug::StackTrace::StackTrace(unsigned long) + 28
1   browser_tests                       0x0000000110054ef5 content::(anonymous namespace)::DumpStackTraceSignalHandler(int) + 229
2   libsystem_platform.dylib            0x00007fff56e26f5a _sigtramp + 26
3   ???                                 0x00007ffee3513aa0 0x0 + 140732712172192
4   browser_tests                       0x0000000111125341 gpu::gles2::GLES2Implementation::OnGpuControlSwapBuffersCompleted(gpu::SwapBuffersCompleteParams const&) + 193
5   browser_tests                       0x000000010e39a75b bool IPC::MessageT<GpuCommandBufferMsg_SwapBuffersCompleted_Meta, std::__1::tuple<gpu::SwapBuffersCompleteParams>, void>::Dispatch<gpu::CommandBufferProxyImpl, gpu::CommandBufferProxyImpl, void, void (gpu::CommandBufferProxyImpl::*)(gpu::SwapBuffersCompleteParams const&)>(IPC::Message const*, gpu::CommandBufferProxyImpl*, gpu::CommandBufferProxyImpl*, void*, void (gpu::CommandBufferProxyImpl::*)(gpu::SwapBuffersCompleteParams const&)) + 123
6   browser_tests                       0x000000010e399e66 gpu::CommandBufferProxyImpl::OnMessageReceived(IPC::Message const&) + 358
7   browser_tests                       0x000000010e3a0f2c base::internal::Invoker<base::internal::BindState<base::internal::IgnoreResultHelper<bool (IPC::Listener::*)(IPC::Message const&)>, base::WeakPtr<IPC::Listener>, IPC::Message>, void ()>::Run(base::internal::BindStateBase*) + 92
8   browser_tests                       0x000000011138eb16 ui::(anonymous namespace)::WrappedTask::Run() + 54
9   browser_tests                       0x000000010fa1f027 base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) + 247
10  browser_tests                       0x000000010fa40ef4 base::MessageLoop::RunTask(base::PendingTask*) + 468
11  browser_tests                       0x000000010fa413c8 base::MessageLoop::DoWork() + 424
12  browser_tests                       0x000000010fa430fa base::MessagePumpCFRunLoopBase::RunWork() + 42
13  browser_tests                       0x000000010fa338ca base::mac::CallWithEHFrame(void () block_pointer) + 10
14  browser_tests                       0x000000010fa42a1f base::MessagePumpCFRunLoopBase::RunWorkSource(void*) + 63
15  CoreFoundation                      0x00007fff2f211a21 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
16  CoreFoundation                      0x00007fff2f2c926c __CFRunLoopDoSource0 + 108
17  CoreFoundation                      0x00007fff2f1f4ab0 __CFRunLoopDoSources0 + 208
18  CoreFoundation                      0x00007fff2f1f3f2d __CFRunLoopRun + 1293
19  CoreFoundation                      0x00007fff2f1f3787 CFRunLoopRunSpecific + 487
20  HIToolbox                           0x00007fff2e500e26 RunCurrentEventLoopInMode + 286
21  HIToolbox                           0x00007fff2e500b96 ReceiveNextEventCommon + 613
22  HIToolbox                           0x00007fff2e500914 _BlockUntilNextEventMatchingListInModeWithFilter + 64
23  AppKit                              0x00007fff2c7cbf5f _DPSNextEvent + 2085
24  AppKit                              0x00007fff2cf61b4c -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044
25  browser_tests                       0x000000010fb72b50 __71-[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:]_block_invoke + 64
26  browser_tests                       0x000000010fa338ca base::mac::CallWithEHFrame(void () block_pointer) + 10
27  browser_tests                       0x000000010fb72a84 -[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 164
28  AppKit                              0x00007fff2c7c0d6d -[NSApplication run] + 764
29  browser_tests                       0x000000010fa43a1c base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*) + 364
30  browser_tests                       0x000000010fa4253e base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*) + 110
31  browser_tests                       0x000000010fa66935 base::RunLoop::Run() + 53
32  browser_tests                       0x0000000110078f1d content::RunMessageLoop() + 45
33  browser_tests                       0x000000010fb00849 InProcessBrowserTest::QuitBrowsers() + 217
34  browser_tests                       0x000000010fb00728 InProcessBrowserTest::PostRunTestOnMainThread() + 40
35  browser_tests                       0x0000000110054dd3 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop() + 963
36  browser_tests                       0x000000010fb78b49 ChromeBrowserMainParts::PreMainMessageLoopRunImpl() + 4233
37  browser_tests                       0x000000010fb779be ChromeBrowserMainParts::PreMainMessageLoopRun() + 62
38  browser_tests                       0x000000010e71f733 content::BrowserMainLoop::PreMainMessageLoopRun() + 67
39  browser_tests                       0x000000010eadd4d7 content::StartupTaskRunner::RunAllTasksNow() + 39
40  browser_tests                       0x000000010e71e34d content::BrowserMainLoop::CreateStartupTasks() + 813
41  browser_tests                       0x000000010e721920 content::BrowserMainRunnerImpl::Initialize(content::MainFunctionParams const&) + 96
42  browser_tests                       0x000000010e71c294 content::BrowserMain(content::MainFunctionParams const&) + 180
43  browser_tests                       0x000000010f9bc1a9 content::ContentMainRunnerImpl::Run() + 377
44  browser_tests                       0x00000001116827a2 service_manager::Main(service_manager::MainParams const&) + 2354
45  browser_tests                       0x000000010f9bb634 content::ContentMain(content::ContentMainParams const&) + 68
46  browser_tests                       0x000000011005482e content::BrowserTestBase::SetUp() + 2574
47  browser_tests                       0x000000010faff788 InProcessBrowserTest::SetUp() + 536
48  browser_tests                       0x000000010dc7ae2d testing::Test::Run() + 109
49  browser_tests                       0x000000010dc7ba70 testing::TestInfo::Run() + 304
50  browser_tests                       0x000000010dc7bfe7 testing::TestCase::Run() + 279
51  browser_tests                       0x000000010dc87647 testing::internal::UnitTestImpl::RunAllTests() + 855
52  browser_tests                       0x000000010dc872ce testing::UnitTest::Run() + 110
53  browser_tests                       0x000000010fb17e87 base::TestSuite::Run() + 167
54  browser_tests                       0x000000010fa121e5 ChromeTestSuiteRunner::RunTestSuite(int, char**) + 37
55  browser_tests                       0x0000000110075905 content::LaunchTests(content::TestLauncherDelegate*, unsigned long, int, char**) + 389
56  browser_tests                       0x000000010fa126cc LaunchChromeTests(unsigned long, content::TestLauncherDelegate*, int, char**) + 348
57  browser_tests                       0x000000010fa1215e main + 94
58  libdyld.dylib                       0x00007fff56ba5115 start + 1
59  ???                                 0x000000000000000a 0x0 + 10