Filed by sheriff-o-matic@appspot.gserviceaccount.com on behalf of charliea@chromium.org

Excerpt from logs:

(CRITICAL) 2018-05-10 16:46:10,740 story_runner.RunBenchmark:366  Benchmark execution interrupted by a fatal exception.
(INFO) 2018-05-10 16:46:10,740 exception_formatter.PrintFormattedException:19  Try printing formatted exception: None None None

Traceback (most recent call last):
  RunBenchmark at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py:359
    max_num_values=benchmark.MAX_NUM_VALUES)
  Run at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py:206
    test, finder_options.Copy(), story_set)
  traced_function at /b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:52
    return func(*args, **kwargs)
  __init__ at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py:69
    self._test, finder_options)
  traced_function at /b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:52
    return func(*args, **kwargs)
  _GetPossibleBrowser at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py:128
    possible_browser = self._FindBrowser(finder_options)
  traced_function at /b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:52
    return func(*args, **kwargs)
  _FindBrowser at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py:123
    '\n'.join(browser_finder.GetAllAvailableBrowserTypes(finder_options)))
BrowserFinderException: No browser found.

Available browsers:
android-chrome
android-chromium
android-system-chrome
reference

Looks like this has been happening for the last 11 runs on: 

- blink_perf.svg
- dummy_benchmark.stable_benchmark_1 (oh the irony)
- rasterize_and_record_micro.partial_invalidation
- rasterize_and_record_micro.top_25
(and more)