This appears to be an issue with the mac sad tab page based on the stack trace:

[ RUN      ] ZoomControllerBrowserTest.CrashedTabsDoNotChangeZoom
[17630:3331:0207/134918.400077:WARNING:notification_platform_bridge_mac.mm(510)] AlertNotificationService: XPC connection invalidated.
2018-02-07 13:49:18.507 browser_tests[17630:235921] *** Owner supplied to -[NSTrackingArea initWithRect:options:owner:userInfo:] referenced a deallocating object. Tracking area behavior is undefined. Break on NSTrackingAreaDeallocatingOwnerError to debug.
[17630:775:0207/134918.824027:WARNING:sad_tab.cc(276)] Tab Killed:
[17630:775:0207/134918.839873:FATAL:sad_tab.cc(198)] Check failed: !recorded_paint_.
0   browser_tests                       0x000000010fb9a22c base::debug::StackTrace::StackTrace(unsigned long) + 28
1   browser_tests                       0x000000010fbbef90 logging::LogMessage::~LogMessage() + 224
2   browser_tests                       0x00000001139d1788 SadTab::RecordFirstPaint() + 88
3   AppKit                              0x00007fff33d058b2 -[_NSViewBackingLayer display] + 407
4   QuartzCore                          0x00007fff41711d3b CA::Layer::display_if_needed(CA::Transaction*) + 633
5   QuartzCore                          0x00007fff417117f9 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 35
6   QuartzCore                          0x00007fff41710894 CA::Context::commit_transaction(CA::Transaction*) + 326
7   QuartzCore                          0x00007fff4171043d CA::Transaction::commit() + 487
8   AppKit                              0x00007fff344bc658 __65+[CATransaction(NSCATransaction) NS_setFlushesWithDisplayRefresh]_block_invoke + 283
9   CoreFoundation                      0x00007fff36601127 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
10  CoreFoundation                      0x00007fff3660104f __CFRunLoopDoObservers + 527
11  CoreFoundation                      0x00007fff365e36a8 __CFRunLoopRun + 1240
12  CoreFoundation                      0x00007fff365e2f43 CFRunLoopRunSpecific + 483
13  HIToolbox                           0x00007fff358fae26 RunCurrentEventLoopInMode + 286
14  HIToolbox                           0x00007fff358fab96 ReceiveNextEventCommon + 613
15  HIToolbox                           0x00007fff358fa914 _BlockUntilNextEventMatchingListInModeWithFilter + 64
16  AppKit                              0x00007fff33bc5f5f _DPSNextEvent + 2085
17  AppKit                              0x00007fff3435bb4c -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044
18  browser_tests                       0x000000010fd61ae0 __71-[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:]_block_invoke + 64
19  browser_tests                       0x000000010fbc198a base::mac::CallWithEHFrame(void () block_pointer) + 10
20  browser_tests                       0x000000010fd61a24 -[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 164
21  AppKit                              0x00007fff33bbad6d -[NSApplication run] + 764
22  browser_tests                       0x000000010fbded9c base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*) + 364
23  browser_tests                       0x000000010fbdcffe base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*) + 110
24  browser_tests                       0x000000010fbd9a39 base::MessageLoop::Run(bool) + 169
25  browser_tests                       0x000000010fc179c9 base::RunLoop::Run() + 249
26  browser_tests                       0x00000001104a8050 content::RunAllPendingInMessageLoop() + 496
27  browser_tests                       0x000000010fcbd4b0 InProcessBrowserTest::PostRunTestOnMainThread() + 32
28  browser_tests                       0x00000001104481f5 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop() + 917
29  browser_tests                       0x000000010fd67d80 ChromeBrowserMainParts::PreMainMessageLoopRunImpl() + 4784
30  browser_tests                       0x000000010fd669ce ChromeBrowserMainParts::PreMainMessageLoopRun() + 62
31  browser_tests                       0x000000010dd5f0e3 content::BrowserMainLoop::PreMainMessageLoopRun() + 67
32  browser_tests                       0x000000010e2ab925 content::StartupTaskRunner::RunAllTasksNow() + 117
33  browser_tests                       0x000000010dd5d70d content::BrowserMainLoop::CreateStartupTasks() + 765
34  browser_tests                       0x000000010dd61d83 content::BrowserMainRunnerImpl::Initialize(content::MainFunctionParams const&) + 99
35  browser_tests                       0x000000010dd5b632 content::BrowserMain(content::MainFunctionParams const&) + 210
36  browser_tests                       0x000000010fa95745 content::ContentMainRunnerImpl::Run() + 565
37  browser_tests                       0x000000011251ef62 service_manager::Main(service_manager::MainParams const&) + 2482
38  browser_tests                       0x000000010fa94ad4 content::ContentMain(content::ContentMainParams const&) + 68
39  browser_tests                       0x0000000110447c39 content::BrowserTestBase::SetUp() + 3193
40  browser_tests                       0x000000010fcbc579 InProcessBrowserTest::SetUp() + 505
41  browser_tests                       0x000000010cfa16d1 testing::Test::Run() + 97
42  browser_tests                       0x000000010cfa2370 testing::TestInfo::Run() + 288
43  browser_tests                       0x000000010cfa2997 testing::TestCase::Run() + 263
44  browser_tests                       0x000000010cfaaf97 testing::internal::UnitTestImpl::RunAllTests() + 903
45  browser_tests                       0x000000010cfaabe3 testing::UnitTest::Run() + 163
46  browser_tests                       0x000000010fcded67 base::TestSuite::Run() + 167
47  browser_tests                       0x000000010fb80765 ChromeTestSuiteRunner::RunTestSuite(int, char**) + 37
48  browser_tests                       0x00000001104a2e5e content::LaunchTests(content::TestLauncherDelegate*, unsigned long, int, char**) + 478
49  browser_tests                       0x000000010fb80c7c LaunchChromeTests(unsigned long, content::TestLauncherDelegate*, int, char**) + 348
50  browser_tests                       0x000000010fb806be main + 94
51  libdyld.dylib                       0x00007fff5def6115 start + 1
52  ???                                 0x000000000000000a 0x0 + 10