browser_tests failing on chromium.mac/Mac10.9 Tests (dbg)

Type: build-failure

Builders failed on: 
- Mac10.9 Tests (dbg): 
  https://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests%20%28dbg%29


CrSettingsMainPageTest.All (run #1):
[ RUN      ] CrSettingsMainPageTest.All
[33932:52251:1216/135927.355493:WARNING:mac_util.mm(222)] Failed to set backup exclusion for file '/private/var/folders/9x/6c6sv3cj4j53wzpzthbp4ksm0000gm/T/.org.chromium.Chromium.0dA6X5/dlqgM5p/Default/History': Error Domain=NSOSStatusErrorDomain Code=-50 "The operation couldn?t be completed. (OSStatus error -50.)" (paramErr: error in user parameter list) (-50)
[33932:52251:1216/135927.388034:WARNING:mac_util.mm(222)] Failed to set backup exclusion for file '/private/var/folders/9x/6c6sv3cj4j53wzpzthbp4ksm0000gm/T/.org.chromium.Chromium.0dA6X5/dlqgM5p/Default/Favicons': Error Domain=NSOSStatusErrorDomain Code=-50 "The operation couldn?t be completed. (OSStatus error -50.)" (paramErr: error in user parameter list) (-50)
[33936:771:1216/135927.645386:WARNING:vt_video_decode_accelerator_mac.cc(169)] Failed to create VTDecompressionSession: Error Domain=NSOSStatusErrorDomain Code=-8973 "The operation couldn?t be completed. (OSStatus error -8973.)" (codecOpenErr) (-8973)
[33936:771:1216/135927.647736:WARNING:vt_video_decode_accelerator_mac.cc(191)] Failed to create hardware VideoToolbox session
[33936:771:1216/135927.739275:ERROR:vt_video_encode_accelerator_mac.cc(518)]  VTCompressionSessionCreate failed: -12908
[33937:771:1216/135929.498169:ERROR:render_process_impl.cc(212)] WebFrame LEAKED 1 TIMES
[33932:771:1216/135935.223734:WARNING:CONSOLE(1)] "This file is deprecated. Please use `iron-flex-layout/iron-flex-layout-classes.html`, and one of the specific dom-modules instead", source: chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-shadow-flex-layout-extracted.js (1)
[33932:771:1216/135935.232696:WARNING:CONSOLE(1)] "This file is deprecated. Please use `iron-flex-layout/iron-flex-layout-classes.html`, and one of the specific dom-modules instead", source: chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout-extracted.js (1)
[33932:771:1216/135937.759452:INFO:CONSOLE(1209)] "Running TestCase CrSettingsMainPageTest.MAYBE_MainPage_All", source: test_api.js (1209)
[33932:771:1216/135937.940011:WARNING:CONSOLE(118)] "/deep/ combinator is deprecated. See https://www.chromestatus.com/features/6750456638341120 for more details.", source: chrome://md-settings/settings_main/settings_main.js (118)
[33932:771:1216/135952.359153:ERROR:CONSOLE(48)] "Mocha test failed: MainPageTests exiting search mode, advanced expanded
AssertionError: expected 'none' to equal ''
    at Function.assert.strictEqual (chai.js:2277:32)
    at assertEquals (test_api.js:893:17)
    at assertPageVisibility (settings_main_test.js:176:9)
    at settings_main_test.js:201:11
", source: mocha_adapter.js (48)
[33932:771:1216/140000.620159:INFO:CONSOLE(125)] "Page load time: 8387 ms", source: polymer_browser_test_base.js (125)
[33932:771:1216/140000.621658:INFO:CONSOLE(127)] "Test run time: 22854 ms", source: polymer_browser_test_base.js (127)
[33932:771:1216/140000.622829:INFO:CONSOLE(129)] "Total time: 31242 ms", source: polymer_browser_test_base.js (129)
[33932:771:1216/140000.623003:ERROR:web_ui_test_handler.cc(76)] Test Errors: 1/8 tests had failed assertions.
[33932:771:1216/140000.623274:ERROR:web_ui_browser_test.cc(473)] CONDITION FAILURE: encountered javascript console error(s):
[33932:771:1216/140000.623302:ERROR:web_ui_browser_test.cc(475)] JS ERROR: '[33932:771:1216/135952.359153:ERROR:CONSOLE(48)] "Mocha test failed: MainPageTests exiting search mode, advanced expanded
AssertionError: expected 'none' to equal ''
    at Function.assert.strictEqual (chai.js:2277:32)
    at assertEquals (test_api.js:893:17)
    at assertPageVisibility (settings_main_test.js:176:9)
    at settings_main_test.js:201:11
", source: mocha_adapter.js (48)
'
[33932:771:1216/140000.623324:ERROR:web_ui_browser_test.cc(477)] JS call assumed failed, because JS console error(s) found.
gen/chrome/test/data/webui/settings/cr_settings_browsertest-gen.cc:1186: Failure
Value of: RunJavascriptTestF( true, "CrSettingsMainPageTest", "MAYBE_MainPage_All")
  Actual: false
Expected: true
[33932:771:1216/140000.961218:WARNING:url_request_context_getter.cc(43)] URLRequestContextGetter leaking due to no owning thread.
[  FAILED  ] CrSettingsMainPageTest.All, where TypeParam =  and GetParam() =  (34013 ms)