I'd seen a few flakes of OOPBrowserTest.Basic so I decided to look it up in the flakiness dashboard:

https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=content_browsertests&tests=OOPBrowserTest.Basic

There are fairly regular flakes on both Linux ChromeOS and Mac ASan bots.

The most recent Mac failure to ping sheriffs was:
https://ci.chromium.org/buildbot/chromium.memory/Mac%20ASan%2064%20Tests%20%281%29/40472

With an error stack of:

[56648:775:0504/063324.002376:WARNING:vt_video_decode_accelerator_mac.cc(177)] Failed to create VTDecompressionSession: Error Domain=NSOSStatusErrorDomain Code=-8973 "codecOpenErr" (-8973)
[56648:775:0504/063324.003452:WARNING:vt_video_decode_accelerator_mac.cc(199)] Failed to create hardware VideoToolbox session
[56648:775:0504/063324.095289:ERROR:vt_video_encode_accelerator_mac.cc(516)]  VTCompressionSessionCreate failed: -12908
../../content/browser/oop_browsertest.cc:67: Failure
Value of: rwh->GetView()->IsSurfaceAvailableForCopy()
  Actual: false
Expected: true
Stack trace:
0   content_browsertests                0x0000000110788512 testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop(int) + 242
1   content_browsertests                0x00000001107870f7 testing::internal::AssertHelper::operator=(testing::Message const&) const + 359
2   content_browsertests                0x000000010e5f5296 content::(anonymous namespace)::OOPBrowserTest_Basic_Test::RunTestOnMainThread() + 2262
3   content_browsertests                0x0000000115a4acb8 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop() + 1496
4   content_browsertests                0x0000000115c707a8 content::ShellBrowserMainParts::PreMainMessageLoopRun() + 824
5   content_browsertests                0x0000000113f9bb33 content::BrowserMainLoop::PreMainMessageLoopRun() + 355
6   content_browsertests                0x0000000114f4680f content::StartupTaskRunner::RunAllTasksNow() + 415
7   content_browsertests                0x0000000113f9792a content::BrowserMainLoop::CreateStartupTasks() + 1850
8   content_browsertests                0x0000000113fa34bf content::BrowserMainRunnerImpl::Initialize(content::MainFunctionParams const&) + 463
9   content_browsertests                0x0000000115c6ed96 ShellBrowserMain(content::MainFunctionParams const&, std::__1::unique_ptr<content::BrowserMainRunner, std::__1::default_delete<content::BrowserMainRunner> > const&) + 278
10  content_browsertests                0x0000000115b7cbe7 content::ShellMainDelegate::RunProcess(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, content::MainFunctionParams const&) + 743
11  content_browsertests                0x0000000113bbaea0 content::RunNamedProcessTypeMain(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, content::MainFunctionParams const&, content::ContentMainDelegate*) + 1248
12  content_browsertests                0x0000000113bbcb23 content::ContentMainRunnerImpl::Run() + 1315
13  content_browsertests                0x000000011a85cc41 service_manager::Main(service_manager::MainParams const&) + 5377
14  content_browsertests                0x00000001113df011 content::ContentMain(content::ContentMainParams const&) + 353
15  content_browsertests                0x0000000115a498e9 content::BrowserTestBase::SetUp() + 6057
16  content_browsertests                0x0000000115a12d80 content::ContentBrowserTest::SetUp() + 1376
[56644:23043:0504/063324.871656:WARNING:discardable_shared_memory_manager.cc(431)] Some MojoDiscardableSharedMemoryManagerImpls are still alive. They will be leaked.
[  FAILED  ] OOPBrowserTest.Basic, where TypeParam =  and GetParam() =  (1441 ms)

The most recent Linux ChromeOS failure was:
https://ci.chromium.org/buildbot/chromium.memory/Linux%20Chromium%20OS%20ASan%20LSan%20Tests%20(1)/27217

It's stack looks different, so I'm not sure if there are separate causes:
 ERROR:sandbox_linux.cc(378)] InitializeSandbox() called with multiple threads in process gpu-process.
[30901:30901:0427/042809.660941:INFO:GrGLInterface.cpp(460)] ../../third_party/skia/src/gpu/gl/GrGLInterface.cpp:460 GrGLInterface::validate() failed.
[30901:30901:0427/042809.661209:ERROR:gles2_cmd_decoder.cc(3910)] OOP raster support disabled: GrContext creation failed.
[30901:30901:0427/042812.639882:WARNING:gl_context_glx.cc(288)] Could not disable vsync: driver does not support swap control
Received signal 11 SEGV_MAPERR 7f5e1bcc5400
.....bunch of non-symbolized stack....

Followed by:
../../content/browser/oop_browsertest.cc:81: Failure
Value of: snapshot.drawsNothing()
  Actual: true
Expected: false

khushalsagar@ as you re-landed this test, could you help triage this issue?