The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ecb4852fc5dc94fe04048207c7362a67500c0df6

commit ecb4852fc5dc94fe04048207c7362a67500c0df6
Author: Tarun Bansal <tbansal@chromium.org>
Date: Tue Oct 30 21:47:59 2018

Disable flaky test ClipboardApiTest.ExtensionNoPermission on Mac.

Bug: 900301
Change-Id: I11ccd4325c0db0763f85dab45c0c242b5ed1491f
TBR: lazyboy@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/1308973
Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#604025}
[modify] https://crrev.com/ecb4852fc5dc94fe04048207c7362a67500c0df6/chrome/browser/extensions/extension_dom_clipboard_apitest.cc

Assigning so it does not get lost.

Please also update sample failure logs whenever possible as test logs gets purged after a while.

The test is timing out on subtest testExecuteScriptCopyPaste from the two instances I've noticed. Adding logs for context.

[ RUN      ] ClipboardApiTest.ExtensionNoPermission
[6343:4611:1030/120837.778489:WARNING:notification_platform_bridge_mac.mm(512)] AlertNotificationService: XPC connection invalidated.
[6343:775:1030/120838.077151:ERROR:delegated_frame_host.cc(159)] Not implemented reached in void content::DelegatedFrameHost::SetNeedsBeginFrames(bool)
[6343:775:1030/120839.314189:ERROR:delegated_frame_host.cc(159)] Not implemented reached in void content::DelegatedFrameHost::SetNeedsBeginFrames(bool)
[6343:775:1030/120839.626772:INFO:CONSOLE(0)] "[SUCCESS] testDomCopy", source: chrome-extension://ofpaioedadenkdfchcjjaopdodcljkcp/test.html (0)
[6343:775:1030/120839.629149:INFO:CONSOLE(0)] "[SUCCESS] testDomPaste", source: chrome-extension://ofpaioedadenkdfchcjjaopdodcljkcp/test.html (0)
[6343:775:1030/120839.757061:INFO:CONSOLE(0)] "[SUCCESS] testCopyInIframe", source: chrome-extension://ofpaioedadenkdfchcjjaopdodcljkcp/test.html (0)
[6343:775:1030/120839.790531:INFO:CONSOLE(0)] "[SUCCESS] testPasteInIframe", source: chrome-extension://ofpaioedadenkdfchcjjaopdodcljkcp/test.html (0)
[6343:775:1030/120839.798022:ERROR:delegated_frame_host.cc(159)] Not implemented reached in void content::DelegatedFrameHost::SetNeedsBeginFrames(bool)
[6343:87299:1030/120839.866720:WARNING:embedded_test_server.cc(239)] Request not handled. Returning 404: /favicon.ico
BrowserTestBase received signal: Terminated: 15. Backtrace:
0   browser_tests                       0x000000010e9f1c7f base::debug::StackTrace::StackTrace(unsigned long) + 31
1   browser_tests                       0x000000010f085465 content::(anonymous namespace)::DumpStackTraceSignalHandler(int) + 229
2   libsystem_platform.dylib            0x00007fffe0726b3a _sigtramp + 26
3   ???                                 0x00007f8b47a6d2f8 0x0 + 140236179297016
4   CoreFoundation                      0x00007fffcad8f434 __CFRunLoopServiceMachPort + 212
5   CoreFoundation                      0x00007fffcad8e8c1 __CFRunLoopRun + 1361
6   CoreFoundation                      0x00007fffcad8e114 CFRunLoopRunSpecific + 420
7   HIToolbox                           0x00007fffca2eeebc RunCurrentEventLoopInMode + 240
8   HIToolbox                           0x00007fffca2eecf1 ReceiveNextEventCommon + 432
9   HIToolbox                           0x00007fffca2eeb26 _BlockUntilNextEventMatchingListInModeWithFilter + 71
10  AppKit                              0x00007fffc8887a54 _DPSNextEvent + 1120
11  AppKit                              0x00007fffc90037ee -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2796
12  browser_tests                       0x000000010eac3d90 __71-[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:]_block_invoke + 64
13  browser_tests                       0x000000010e92f4fa base::mac::CallWithEHFrame(void () block_pointer) + 10
14  browser_tests                       0x000000010eac3cc4 -[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 164
15  AppKit                              0x00007fffc887c3db -[NSApplication run] + 926
16  browser_tests                       0x000000010e94013c base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*) + 364
17  browser_tests                       0x000000010e93e81e base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*) + 110
18  browser_tests                       0x000000010e96b275 base::RunLoop::Run() + 53
19  browser_tests                       0x000000010f0bb4f2 content::RunThisRunLoop(base::RunLoop*) + 34
20  browser_tests                       0x000000011412b274 extensions::ResultCatcher::GetNextResult() + 100
21  browser_tests                       0x000000010b570241 extensions::ExtensionApiTest::RunExtensionTestImpl(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char const*, int) + 657
22  browser_tests                       0x000000010b56ff89 extensions::ExtensionApiTest::RunExtensionTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) + 41
23  browser_tests                       0x000000010b59bce8 ClipboardApiTest_ExtensionNoPermission_Test::RunTestOnMainThread() + 136
24  browser_tests                       0x000000010f08493b content::BrowserTestBase::ProxyRunTestOnMainThreadLoop() + 491
25  browser_tests                       0x000000010eac8ed0 ChromeBrowserMainParts::PreMainMessageLoopRunImpl() + 4464
26  browser_tests                       0x000000010eac7c67 ChromeBrowserMainParts::PreMainMessageLoopRun() + 55
27  browser_tests                       0x000000010cc78257 content::BrowserMainLoop::PreMainMessageLoopRun() + 55
28  browser_tests                       0x000000010d0e2287 content::StartupTaskRunner::RunAllTasksNow() + 39
29  browser_tests                       0x000000010cc76cd1 content::BrowserMainLoop::CreateStartupTasks() + 689
30  browser_tests                       0x000000010cc7a7cc content::BrowserMainRunnerImpl::Initialize(content::MainFunctionParams const&) + 92
31  browser_tests                       0x000000010cc74db4 content::BrowserMain(content::MainFunctionParams const&) + 180
32  browser_tests                       0x000000010e5659c3 content::ContentMainRunnerImpl::Run(bool) + 755
33  browser_tests                       0x0000000111887291 service_manager::Main(service_manager::MainParams const&) + 2849
34  browser_tests                       0x000000010e564a34 content::ContentMain(content::ContentMainParams const&) + 68
35  browser_tests                       0x000000010f084566 content::BrowserTestBase::SetUp() + 2838
36  browser_tests                       0x000000010ea38701 InProcessBrowserTest::SetUp() + 529
37  browser_tests                       0x000000010bc7e75d testing::Test::Run() + 109
38  browser_tests                       0x000000010bc7f450 testing::TestInfo::Run() + 288
39  browser_tests                       0x000000010bc7fa77 testing::TestCase::Run() + 247
40  browser_tests                       0x000000010bc8ccb7 testing::internal::UnitTestImpl::RunAllTests() + 855
41  browser_tests                       0x000000010bc8c93d testing::UnitTest::Run() + 109
42  browser_tests                       0x000000010ea5a4a6 base::TestSuite::Run() + 166
43  browser_tests                       0x000000010e901dad ChromeTestSuiteRunner::RunTestSuite(int, char**) + 45
44  browser_tests                       0x000000010f0b6998 content::LaunchTests(content::TestLauncherDelegate*, unsigned long, int, char**) + 552
45  browser_tests                       0x000000010e90235a LaunchChromeTests(unsigned long, content::TestLauncherDelegate*, int, char**) + 490
46  browser_tests                       0x000000010e901b3e main + 94
47  libdyld.dylib                       0x00007fffe0517235 start + 1
[97/389] ClipboardApiTest.ExtensionNoPermission (TIMED OUT)