Stainless Link
https://stainless.corp.google.com/search?view=matrix&row=model&col=build&first_date=2018-10-23&last_date=2018-11-19&test=graphics_Stress%5C.ytvimeowebgl%24&exclude_cts=false&exclude_not_run=true&exclude_non_release=true&exclude_au=true&exclude_acts=true&exclude_retried=true&exclude_non_production=true

Chrome OS CL:
https://crosland.corp.google.com/log/R72-11243.0.0..R72-11256.0.0

Chrome CL :
https://omahaproxy.appspot.com/changelog?old_version=72.0.3600.0&new_version=72.0.3606.0

Stacktrace
11/13 20:11:10.307 INFO |        server_job:0217| 		FAIL	graphics_Stress	graphics_Stress	timestamp=1542168669	localtime=Nov 13 20:11:09	Unhandled TimeoutException: Timed out while waiting 5s for lambda: tab_id == self._browser_backend.browser.foreground_tab.id,.
11/13 20:11:10.311 DEBUG|          autotest:1283| AUTOTEST_STATUS::  Traceback (most recent call last):
11/13 20:11:10.311 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/autotest/common_lib/test.py", line 800, in _call_test_function
11/13 20:11:10.311 DEBUG|          autotest:1283| AUTOTEST_STATUS::      return func(*args, **dargs)
11/13 20:11:10.311 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/autotest/common_lib/test.py", line 464, in execute
11/13 20:11:10.311 DEBUG|          autotest:1283| AUTOTEST_STATUS::      postprocess_profiled_run, args, dargs)
11/13 20:11:10.312 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/autotest/common_lib/test.py", line 371, in _call_run_once
11/13 20:11:10.312 DEBUG|          autotest:1283| AUTOTEST_STATUS::      self.run_once(*args, **dargs)
11/13 20:11:10.312 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/autotest/tests/graphics_Stress/graphics_Stress.py", line 210, in run_once
11/13 20:11:10.312 DEBUG|          autotest:1283| AUTOTEST_STATUS::      self.subtests[subtest](self)
11/13 20:11:10.312 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/autotest/tests/graphics_Stress/graphics_Stress.py", line 176, in yt_vimeo_webgl_test
11/13 20:11:10.313 DEBUG|          autotest:1283| AUTOTEST_STATUS::      WEBGL_AQUARIUM_URL])
11/13 20:11:10.313 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/autotest/tests/graphics_Stress/graphics_Stress.py", line 72, in open_urls
11/13 20:11:10.313 DEBUG|          autotest:1283| AUTOTEST_STATUS::      tab.Activate()
11/13 20:11:10.313 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/telemetry/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 52, in traced_function
11/13 20:11:10.313 DEBUG|          autotest:1283| AUTOTEST_STATUS::      return func(*args, **kwargs)
11/13 20:11:10.313 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/browser/tab.py", line 85, in Activate
11/13 20:11:10.313 DEBUG|          autotest:1283| AUTOTEST_STATUS::      self._tab_list_backend.ActivateTab(self.id)
11/13 20:11:10.314 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome/tab_list_backend.py", line 87, in ActivateTab
11/13 20:11:10.314 DEBUG|          autotest:1283| AUTOTEST_STATUS::      timeout=5)
11/13 20:11:10.314 DEBUG|          autotest:1283| AUTOTEST_STATUS::    File "/usr/local/telemetry/src/third_party/catapult/common/py_utils/py_utils/__init__.py", line 150, in WaitFor
11/13 20:11:10.314 DEBUG|          autotest:1283| AUTOTEST_STATUS::      (timeout, GetConditionString()))
11/13 20:11:10.314 DEBUG|          autotest:1283| AUTOTEST_STATUS::  TimeoutException: Timed out while waiting 5s for lambda: tab_id == self._browser_backend.browser.foreground_tab.id,.
11/13 20:11:10.322 DEBUG|          autotest:1283| AUTOTEST_STATUS::	END FAIL	graphics_Stress	graphics_Stress	timestamp=1542168669	localtime=Nov 13 20:11:09