webrtc.webrtc_smoothness_tbmv2 failing on 4 builders

Builders failed on: 
- Android Nexus5 Perf (1): 
  https://build.chromium.org/p/chromium.perf/builders/Android%20Nexus5%20Perf%20%281%29
- Android Nexus6 Perf (1): 
  https://build.chromium.org/p/chromium.perf/builders/Android%20Nexus6%20Perf%20%281%29
- Android Nexus7v2 Perf (1): 
  https://build.chromium.org/p/chromium.perf/builders/Android%20Nexus7v2%20Perf%20%281%29
- Android One Perf (1): 
  https://build.chromium.org/p/chromium.perf/builders/Android%20One%20Perf%20%281%29

Looks like this has been failing since it was added. I'm going to disable while a fix is worked on. 

Sample log:
https://luci-logdog.appspot.com/v/?s=chrome%2Fbb%2Fchromium.perf%2FAndroid_Nexus6_Perf__1_%2F5031%2F%2B%2Frecipes%2Fsteps%2Fwebrtc.webrtc_smoothness_tbmv2%2F0%2Fstdout
[ RUN      ] canvas_capture_peer_connection
...
Traceback (most recent call last):
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 88, in _RunStoryAndProcessErrorIfNeeded
    state.RunStory(results)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/page/shared_page_state.py", line 299, in RunStory
    self._current_page.Run(self)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/page/__init__.py", line 112, in Run
    self.RunPageInteractions(action_runner)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/tools/perf/page_sets/webrtc_cases.py", line 152, in RunPageInteractions
    action_runner.ExecuteJavaScript('draw();')
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/internal/actions/action_runner.py", line 214, in ExecuteJavaScript
    return self._tab.ExecuteJavaScript(*args, **kwargs)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py", line 144, in ExecuteJavaScript
    return self._inspector_backend.ExecuteJavaScript(*args, **kwargs)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 37, in inner
    return func(inspector_backend, *args, **kwargs)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 216, in ExecuteJavaScript
    self._runtime.Execute(statement, context_id, timeout)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_runtime.py", line 21, in Execute
    self.Evaluate(expr + '; 0;', context_id, timeout)
  File "/b/c/b/Android_Nexus6_Perf__1_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_runtime.py", line 54, in Evaluate
    description=details.get('exception', {}).get('description'))
EvaluateException: UncaughtReferenceError:
ReferenceError: draw is not defined
    at <anonymous>:1:1