Link to test failure builder :
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/win64%20beta/builds/5970
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/linux64%20beta/builds/6328


Error log :
https://logs.chromium.org/logs/chrome/bb/official.desktop.continuous/win64_beta/5970/+/recipes/steps/browser_tests/0/logs/PrintPreviewDestinationItemTest.Offline/0

Error :
PrintPreviewDestinationItemTest.Offline (run #1):
[ RUN      ] PrintPreviewDestinationItemTest.Offline
[15116:25816:0101/213755.327:WARNING:chrome_browser_main_win.cc(647)] Command line too long for RegisterApplicationRestart:  --disable-gpu-process-for-dx12-vulkan-info-collection --gtest_also_run_disabled_tests --gtest_filter=PrintPreviewDestinationItemTest.Offline --single_process --test-launcher-bot-mode --test-launcher-output="C:\Users\CHROME~1\AppData\Local\Temp\scoped_dir28480_25977\results28480_32627\test_results.xml" --test-launcher-summary-output="c:\users\chrome~1\appdata\local\temp\tmppv90rr.json" --user-data-dir="C:\Users\CHROME~1\AppData\Local\Temp\scoped_dir28480_25977\d28480_10250" --disable-offline-auto-reload --enable-blink-features=MojoJSTest --no-first-run --no-default-browser-check --enable-logging=stderr --disable-default-apps --wm-window-animations-disabled --disable-component-update --test-type=browser --force-color-profile=srgb --disable-zero-browsers-open-for-tests --browser-test --ipc-connection-timeout=30 --allow-file-access-from-files --dom-automation --log-gpu-control-list-decisions --disable-backgrounding-occluded-windows --disable-gl-drawing-for-tests --override-use-software-gl-for-tests --force-color-profile=srgb --disable-compositor-ukm-for-tests --enable-features=NewPrintPreview,TestFeatureForBrowserTest1 --disable-features=TestFeatureForBrowserTest2 --disable-gpu-process-for-dx12-vulkan-info-collection --flag-switches-begin --flag-switches-end --restore-last-session about:blank
[15116:25816:0101/213755.750:WARNING:CONSOLE(0)] "HTML Imports is deprecated and will be removed in M73, around March 2019. Please use ES modules instead. See https://www.chromestatus.com/features/5144752345317376 for more details.", source:  (0)
 [15116:25816:0101/213756.391:INFO:CONSOLE(1281)] "Running TestCase PrintPreviewDestinationItemTest.Offline", source: file:///C:/b/c/b/win64_beta/src/chrome/test/data/webui/test_api.js (1281)
 [15116:25816:0101/213756.417:ERROR:CONSOLE(48)] "Mocha test failed: DestinationItemTest offline
 TypeError: Assignment to constant variable.
     at Context.<anonymous> (file:///C:/b/c/b/win64_beta/src/chrome/test/data/webui/print_preview/destination_item_test.js:60:15)
 ", source: file:///C:/b/c/b/win64_beta/src/chrome/test/data/webui/mocha_adapter.js (48)
 [15116:25816:0101/213756.419:ERROR:web_ui_test_handler.cc(100)] Test Errors: 1/1 tests had failed assertions.
 [15116:25816:0101/213756.420:ERROR:web_ui_browser_test.cc(493)] CONDITION FAILURE: encountered javascript console error(s):
 [15116:25816:0101/213756.420:ERROR:web_ui_browser_test.cc(495)] JS ERROR: '[15116:25816:0101/213756.417:ERROR:CONSOLE(48)] "Mocha test failed: DestinationItemTest offline
 TypeError: Assignment to constant variable.
     at Context.<anonymous> (file:///C:/b/c/b/win64_beta/src/chrome/test/data/webui/print_preview/destination_item_test.js:60:15)
 ", source: file:///C:/b/c/b/win64_beta/src/chrome/test/data/webui/mocha_adapter.js (48)
 '
 [15116:25816:0101/213756.420:ERROR:web_ui_browser_test.cc(497)] JS call assumed failed, because JS console error(s) found.
 gen/chrome/test/data/webui/print_preview/new_print_preview_ui_browsertest-gen.cc(4163): error: Value of: RunJavascriptTestF( true, "PrintPreviewDestinationItemTest", "Offline")
   Actual: false
 Expected: true
 Stack trace:
 Backtrace:
 	testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop [0x00000001407FC3B7+87] (C:\b\c\b\win64_beta\src\third_party\googletest\src\googletest\src\gtest.cc:843)
 	testing::internal::AssertHelper::operator= [0x00000001407FBF3E+78] (C:\b\c\b\win64_beta\src\third_party\googletest\src\googletest\src\gtest.cc:417)
 	PrintPreviewDestinationItemTest_Offline_Test::RunTestOnMainThread [0x000000014079AFAD+1117] (C:\b\c\b\win64_beta\src\out\Release_x64\gen\chrome\test\data\webui\print_preview\new_print_preview_ui_browsertest-gen.cc:4159)
 	content::BrowserTestBase::ProxyRunTestOnMainThreadLoop [0x00000001428B777D+445] (C:\b\c\b\win64_beta\src\content\public\test\browser_test_base.cc:449)
 	ChromeBrowserMainParts::PreMainMessageLoopRunImpl [0x00000001438A94EA+4698] (C:\b\c\b\win64_beta\src\chrome\browser\chrome_browser_main.cc:1819)
 	ChromeBrowserMainParts::PreMainMessageLoopRun [0x00000001438A81C9+153] (C:\b\c\b\win64_beta\src\chrome\browser\chrome_browser_main.cc:1196)
 	content::BrowserMainLoop::PreMainMessageLoopRun [0x00000001412668AE+62] (C:\b\c\b\win64_beta\src\content\browser\browser_main_loop.cc:984)
 	content::StartupTaskRunner::RunAllTasksNow [0x00000001415A8FCB+43] (C:\b\c\b\win64_beta\src\content\browser\startup_task_runner.cc:41)
 	content::BrowserMainLoop::CreateStartupTasks [0x00000001412658A7+599] (C:\b\c\b\win64_beta\src\content\browser\browser_main_loop.cc:919)
 	content::BrowserMainRunnerImpl::Initialize [0x00000001412689BB+107] (C:\b\c\b\win64_beta\src\content\browser\browser_main_runner_impl.cc:145)
 	content::BrowserMain [0x0000000141263CBF+159] (C:\b\c\b\win64_beta\src\content\browser\browser_main.cc:44)
 	content::RunBrowserProcessMain [0x000000014245362F+111] (C:\b\c\b\win64_beta\src\content\app\content_main_runner_impl.cc:543)
 	content::ContentMainRunnerImpl::RunServiceManager [0x0000000142453EAB+219] (C:\b\c\b\win64_beta\src\content\app\content_main_runner_impl.cc:941)
 	content::ContentMainRunnerImpl::Run [0x0000000142453D9E+238] (C:\b\c\b\win64_beta\src\content\app\content_main_runner_impl.cc:0)
 	service_manager::Main [0x000000014307D49C+588] (C:\b\c\b\win64_beta\src\services\service_manager\embedder\main.cc:472)
 	content::ContentMain [0x000000014245355E+62] (C:\b\c\b\win64_beta\src\content\app\content_main.cc:19)
 	content::BrowserTestBase::SetUp [0x00000001428B7484+1796] (C:\b\c\b\win64_beta\src\content\public\test\browser_test_base.cc:349)
 	InProcessBrowserTest::SetUp [0x00000001426F7020+384] (C:\b\c\b\win64_beta\src\chrome\test\base\in_process_browser_test.cc:283)
 [15116:25816:0101/213802.806:WARNING:pref_notifier_impl.cc(23)] Pref observer found at shutdown.
 [15116:25816:0101/213802.806:WARNING:pref_notifier_impl.cc(23)] Pref observer found at shutdown.
 [  FAILED  ] PrintPreviewDestinationItemTest.Offline, where TypeParam =  and GetParam() =  (7621 ms)