Failures:
    AppBannerDataFetcherBrowserTest.WebAppBannerNoTypeInManifest (../../chrome/browser/banners/app_banner_data_fetcher_browsertest.cc:286)
    AppBannerDataFetcherBrowserTest.WebAppBannerNoTypeInManifestCapsExtension (../../chrome/browser/banners/app_banner_data_fetcher_browsertest.cc:292)

e.g.
"""
[ RUN      ] AppBannerDataFetcherBrowserTest.WebAppBannerNoTypeInManifest
2016-07-20 14:57:20.161 browser_tests[95193:1494463] NSWindow warning: adding an unknown subview: <FullSizeContentView: 0x7fbbe06cb150>. Break on NSLog to debug.
2016-07-20 14:57:20.161 browser_tests[95193:1494463] Call stack:
(
    "+callStackSymbols disabled for performance reasons"
)
[95193:93975:0720/145720:WARNING:simple_synchronous_entry.cc(1054)] Could not open platform files for entry.
[95193:51471:0720/145720:WARNING:embedded_test_server.cc(193)] Request not handled. Returning 404: /favicon.ico
[95193:1547:0720/145720:ERROR:app_banner_data_fetcher_browsertest.cc(43)] OnDecidedWhetherToShow: 0
[95193:1547:0720/145720:ERROR:app_banner_data_fetcher_browsertest.cc(43)] OnDecidedWhetherToShow: 0
../../chrome/browser/banners/app_banner_data_fetcher_browsertest.cc:112: Failure
Value of: observer->will_show()
  Actual: false
Expected: expected_to_show
Which is: true
[95193:1547:0720/145720:WARNING:pref_notifier_impl.cc(27)] pref observer found at shutdown printing.enabled
[95193:1547:0720/145720:WARNING:pref_notifier_impl.cc(27)] pref observer found at shutdown plugins.always_authorize
[95193:1547:0720/145720:WARNING:pref_notifier_impl.cc(27)] pref observer found at shutdown plugins.allow_outdated
[  FAILED  ] AppBannerDataFetcherBrowserTest.WebAppBannerNoTypeInManifest, where TypeParam =  and GetParam() =  (1341 ms)
"""