Failed build:
https://uberchromegw.corp.google.com/i/chromium.win/builders/Win7%20Tests%20%28dbg%29%281%29/builds/59788

283 tests failed -- all tests run on a single shard. A spot check shows the same issue for each of them:

[732:3120:0509/121158.468:ERROR:configuration_policy_handler_list.cc(92)] Unknown policy: StringPolicy
[732:3120:0509/121158.531:FATAL:registry.cc(242)] Check failed: key_. 
Backtrace:
	base::debug::StackTrace::StackTrace [0x100AD477+55]
	base::debug::StackTrace::StackTrace [0x100AD111+17]
	logging::LogMessage::~LogMessage [0x10100E5E+94]
	base::win::RegKey::DeleteKey [0x1039F13E+126]
	ChromeBrowserMainParts::SetupFieldTrials [0x02F76D4A+2074]
	ChromeBrowserMainParts::PreCreateThreadsImpl [0x02F7416C+4044]
	ChromeBrowserMainParts::PreCreateThreads [0x02F73002+178]
	ChromeBrowserMainPartsWin::PreCreateThreads [0x02EFD6AF+351]
	content::BrowserMainLoop::PreCreateThreads [0x11ADAC3A+234]
	??$Invoke@PAVBrowserMainLoop@content@@$$V@?$FunctorTraits@P8BrowserMainLoop@content@@AEHXZX@internal@base@@SAHP8BrowserMainLoop@content@@AEHXZ$$QAPAV34@@Z [0x11ACFF82+18]
	base::internal::InvokeHelper<0,int>::MakeItSo<int (__thiscall content::BrowserMainLoop::*const &)(void),content::BrowserMainLoop *> [0x11AD03B4+36]
	base::internal::Invoker<base::internal::BindState<int (__thiscall content::BrowserMainLoop::*)(void),base::internal::UnretainedWrapper<content::BrowserMainLoop> >,int __cdecl(void)>::RunImpl<int (__thiscall content::BrowserMainLoop::*const &)(void),std::t [0x11AD090B+59]
	base::internal::Invoker<base::internal::BindState<int (__thiscall content::BrowserMainLoop::*)(void),base::internal::UnretainedWrapper<content::BrowserMainLoop> >,int __cdecl(void)>::Run [0x11ADB564+36]
	base::Callback<int __cdecl(void),1,1>::Run [0x127A0A51+33]
	content::StartupTaskRunner::RunAllTasksNow [0x127E3C3B+107]
	content::BrowserMainLoop::CreateStartupTasks [0x11AD7099+569]
	content::BrowserMainRunnerImpl::Initialize [0x11AE1255+981]
	content::BrowserMain [0x11ACD27F+95]
	content::RunNamedProcessTypeMain [0x13546DE7+135]
	content::ContentMainRunnerImpl::Run [0x13546C8C+572]
	content::ContentServiceManagerMainDelegate::RunEmbedderProcess [0x13544A64+36]
	service_manager::Main [0x0F5CD709+777]
	content::ContentMain [0x13544F59+41]
	content::BrowserTestBase::SetUp [0x02AB7962+1266]
	InProcessBrowserTest::SetUp [0x02752AE5+741]
	ExtensionBrowserTest::SetUp [0x011FC17A+90]
	testing::internal::HandleExceptionsInMethodIfSupported<testing::Test,void> [0x014CF244+52]
	testing::Test::Run [0x014E492D+77]
	testing::TestInfo::Run [0x014E4B7D+173]
	testing::TestCase::Run [0x014E4A5F+191]
	testing::internal::UnitTestImpl::RunAllTests [0x014E4F85+661]
	testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl,bool> [0x014CF304+52]
	testing::UnitTest::Run [0x014E4CBF+207]
	RUN_ALL_TESTS [0x02784FFF+15]
	base::TestSuite::Run [0x02785163+115]
	ChromeTestSuiteRunner::RunTestSuite [0x05CEF43A+42]
	ChromeTestLauncherDelegate::RunTestSuite [0x05CEF402+34]
	content::LaunchTests [0x02AA05DF+431]
	LaunchChromeTests [0x05CEF3C0+96]
	main [0x05CEF089+89]
	invoke_main [0x05CEDA5E+30] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:64)
	__scrt_common_main_seh [0x05CED960+336] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253)
	__scrt_common_main [0x05CED80D+13] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:296)
	mainCRTStartup [0x05CEDA78+8] (f:\dd\vctools\crt\vcstartup\src\startup\exe_main.cpp:17)
	BaseThreadInitThunk [0x75E4336A+18]
	RtlInitializeExceptionChain [0x779D9882+99]
	RtlInitializeExceptionChain [0x779D9855+54]



Failing tests (probably not relevant, as it's just *all of them* that got assigned to the unfortunate shard):

ExtensionApiTest.SharedModuleInstallEvent
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/64
BrowserCloseManagerWithDownloadsBrowserTest/BrowserCloseManagerWithDownloadsBrowserTest.TestBeforeUnloadAndDownloads/0
ExtensionWebstorePrivateApiTest.MissingDownloadDir
ContinueWhereILeftOffTest.PostWithPasswordCloseAllBrowsers
CrashRecoveryBrowserTest.LoadInNewTab
PasswordManagerBrowserTestBase.DontPromptForPasswordFormWithDefaultValue
WebUIWebViewBrowserTest.DisplayNone
MediaStreamPermissionTest.TestDenyingUserMediaIncognito
InBrowserCleanerUI/SRTFetcherTest.NothingFound/6
PushMessagingBrowserTest.RegisterFailureEmptyPushSubscriptionOptions
PlatformAppWithFileBrowserTest.LaunchWithWrongExtension
GetAuthTokenFunctionTest.ScopesEmail
SafeBrowsingBlockingPageBrowserTestWithThreatTypeAndIsolationSetting/SafeBrowsingBlockingPageBrowserTest.ReloadWhileInterstitialShowing/2
ChromeURLDataManagerTest.UnknownResource
TabContentsTagTest.PreExistingTaskProviding
SubresourceFilterBrowserTest.WhiteliseSiteOnReload_ActivationDisabledOnReloadFromScript
SettingsPrivateApiTest.GetPref
WebUIResourceBrowserTest.ContextMenuHandlerTest
SafeBrowsingBlockingPageBrowserTestWithThreatTypeAndIsolationSetting/SafeBrowsingBlockingPageBrowserTest.RedirectCanceled/1
ExtensionSettingsApiTest.SimpleTest
MediaRouterElementsBrowserTest.MediaRouterRouteDetails
SettingsAnimationBrowserTest.Animation
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/44
MaterialBookmarksDNDManagerTest.All
MimeHandlerViewTests/MimeHandlerViewTest.ResizeBeforeAttach/1
ExtensionContextMenuBrowserTest.Frames
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/2
ContentScriptApiTests/ContentScriptApiTest.ContentScriptBlockingScript/1
PasswordDialogViewTest.InvokeDialog_PopupAutoSigninPrompt
PrerenderBrowserTest.PrerenderPageWithFragment
DownloadTest.Resumption_WithPrompt
InstallableManagerBrowserTest.CheckManifestWithOnlyRelatedApplications
CloudPolicyTest.FetchPolicy
PPAPINaClNewlibTest.Graphics2D_Paint
ContinueWhereILeftOffTest.PRE_PostWithPassword
PaymentRequestCreditCardEditorTest.EnteringNothingInARequiredField
SyncedPrefChangeRegistrarTest.IgnoreSyncChangesToManagedPrefs
PPAPINaClTestDisallowedSockets.UDPSocketPrivateDisallowed
ExecuteScriptApiTest/DestructiveScriptTest.DOMNodeInserted3/0
ContentScriptApiTests/ContentScriptApiTest.ContentScriptAboutBlankIframes/0
ErrorPageNavigationCorrectionsFailTest.StaleCacheStatusFailedCorrections
HostZoomMapBrowserTest.OffTheRecordProfileHostZoomMap
HostedAppVsTdiTest.ProcessAllocation
ExtensionModuleApiTest.CognitoNoFile
WebViewTests/WebViewTest.Shim_WebViewWebRequestRegistryHasNoCache/1
MaterialHistorySyncedTabsTest.All
NetworkingPrivateServiceClientApiTest.GetVisibleNetworksWifi
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/112 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/133 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/14 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/140 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/143 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/22 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/31 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/35 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/77 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/88 [logdog]
AllForms/FormStructureBrowserTest.DataDrivenHeuristics/90 [logdog]
AppBackgroundPageApiTest.NoJsBackgroundPage [logdog]
AppViewTests/AppViewTest.KillGuestCommunicatingWithWrongAppView/1 [logdog]
AppWindowApiTest.AlwaysOnTopWithPermissions [logdog]
AutofillTest.AppendCountryCodeForAggregatedPhones [logdog]
AutofillTest.ProfilesNotAggregatedWithNoAddress [logdog]
BackgroundAppBrowserTest.ReloadBackgroundApp [logdog]
BitmapFetcherBrowserTest.StartTest [logdog]
BookmarkBrowsertest.PRE_Persist [logdog]
BrowserActionsBarBrowserTest.BrowserActionPopupTest [logdog]
BrowserCloseManagerBrowserTest/BrowserCloseManagerBrowserTest.TestHangInBeforeUnloadMultipleWindows/0 [logdog]
BrowserNavigatorTest.Disposition_IncognitoRefocus [logdog]
BrowserNavigatorTest.NavigateFromDefaultToOptionsInSameTab [logdog]
BrowserTest.CancelBeforeUnloadResetsURL [logdog]
BrowserTest.ShouldShowLocationBar [logdog]
BrowserViewTest.AvoidUnnecessaryVisibilityChanges [logdog]
BrowserViewTest.CloseWithTabsStartWithActive [logdog]
CaptivePortalBrowserTest.Status511 [logdog]
CardUnmaskPromptViewBrowserTest.DisplayUI [logdog]
CertificateReportingServiceBrowserTest.DisableSafebrowsing [logdog]
ChromeNavigationBrowserTest.TransientEntryPreservedOnMultipleNavigationsDuringInterstitial [logdog]
CollectedCookiesViewsTest.ChangeAndCloseTab [logdog]
ComponentToolbarActionsBrowserTest.ComponentToolbarActionsShowUpAndRespondToClicks [logdog]
ContentAutofillDriverBrowserTest.TestPageNavigationHidingAutofillPopup [logdog]
ContentScriptApiTests/ContentScriptApiTest.ContentScriptAboutBlankAndSrcdoc/1 [logdog]
ContentScriptApiTests/ContentScriptApiTest.ContentScriptCSSLocalization/0 [logdog]
ContentScriptApiTests/ContentScriptApiTest.ContentScriptOtherExtensions/0 [logdog]
ContentSettingBubbleDialogTest.InvokeDialog_mediastream_mic [logdog]
ContentSettingsTest.PRE_BasicCookiesHttps [logdog]
ContentSettingsTest.RedirectLoopCookies [logdog]
CrElementsLazyRenderTest.All [logdog]
CrElementsPolicyIndicatorBehaviorTest.All [logdog]
CrExtensionsBrowserTest.ExtensionItemList [logdog]
CrExtensionsBrowserTestWithInstalledExtension.ExtensionServiceUninstallTest [logdog]
CrSettingsProtocolHandlersTest.All [logdog]
CrashRecoveryBrowserTest.DoubleReloadWithError [logdog]
CrossOriginXHR.NoFileAccess [logdog]
DeclarativeContentApiTest.EnabledForSpanningIncognito [logdog]
DevToolsBeforeUnloadTest.TestUndockedDevToolsClose [logdog]
DevToolsExtensionTest.TestContentScriptIsPresent [logdog]
DomDistillerTabUtilsBrowserTest.TestSwapWebContents [logdog]
DomDistillerViewerSourceBrowserTest.InvalidURLShouldNotCrash [logdog]
DomDistillerViewerSourceBrowserTest.MultiPageArticle [logdog]
DomDistillerViewerSourceBrowserTest.TestBadUrlErrorPage [logdog]
DownloadExtensionTest.DownloadExtensionTest_OnDeterminingFilename_Override [logdog]
DownloadExtensionTest.DownloadExtensionTest_SearchIdAndFilename [logdog]
DownloadTest.DownloadResourceThrottleCancels [logdog]
DownloadTestWithFakeSafeBrowsing.NoUncommonDownloadReportWithoutUserProceed [logdog]
EncodingAliases/BrowserEncodingTest.TestEncodingAliasMapping/0 [logdog]
EncryptedMediaSupportedTypesExternalClearKeyTest.NoCodecs [logdog]
ErrorConsoleBrowserTest.BadExtensionPage [logdog]
ExecuteScriptApiTest.ExecuteScriptByFrameId [logdog]
ExecuteScriptApiTest.NavigationRaceJavaScriptURL [logdog]
ExtensionActionRunnerBrowserTest.RemoveExtensionWithPendingInjections [logdog]
ExtensionApiTabTest.TabsOnUpdated [logdog]
ExtensionApiTest.BookmarkManagerEditDisabled [logdog]
ExtensionApiTest.ChromeRuntimeUninstallURL [logdog]
ExtensionApiTest.CookiesEventsSpanning [logdog]
ExtensionBrowserTest.PRE_BrowserActionDefaultPersistence [logdog]
ExtensionManagementApiTest.Basics [logdog]
ExtensionManagementTest.DisableEnable [logdog]
ExtensionMessageBubbleViewBrowserTest.TestUninstallDangerousExtension [logdog]
ExtensionModuleApiTest.CognitoFile [logdog]
ExtensionOverrideTest.OverridingExtensionUnloadedWithPageOpen [logdog]
ExtensionPageCaptureApiTest.SaveAsMHTML [logdog]
ExtensionRequestLimitingThrottleBrowserTest.DoNotThrottleCachedResponse_NonRedirectCached [logdog]
ExtensionRequestLimitingThrottleBrowserTest.DoNotThrottleCachedResponse_Redirect [logdog]
ExtensionTabsTest.GetAllWindows [logdog]
ExtensionTabsZoomTest.SetToDefaultZoom [logdog]
ExtensionViewTests/ExtensionViewTest.ShimExtensionAttribute/0 [logdog]
ExtensionViewTests/ExtensionViewTest.ShimSrcAttribute/1 [logdog]
ExtensionWebRequestApiTest.WebRequestApi [logdog]
ExtensionWebRequestApiTest.WebSocketRequestAuthRequired [logdog]
FastUnloadTest.BrowserListForceCloseNoUnloadListenersWithFastUnload [logdog]
FeedbackTest.ShowFeedback [logdog]
FileSystemApiTest.FileSystemApiIsWritableTest [logdog]
FindInPageControllerTest.FindLongString [logdog]
FlashEmbeds/ChromeContentRendererClientBrowserTest.RewriteYouTubeFlashEmbedObject/3 [logdog]
FlashPermissionBrowserTest.SucceedsInPopupWindow [logdog]
FlashPermissionBrowserTest.TriggerPromptViaNewWindow [logdog]
GeolocationBrowserTest.CancelPermissionForFrame [logdog]
GetAuthTokenFunctionTest.NonInteractiveMintServiceError [logdog]
HttpsEngagementPageLoadMetricsBrowserTest.Navigate_Http [logdog]
IdentityGetAccountsFunctionTest.PrimaryAccountSignedIn [logdog]
ImageWriterUtilityClientTest.Write [logdog]
InBrowserCleanerUI/SRTFetcherTest.CleanupNeeded/3 [logdog]
InBrowserCleanerUI/SRTFetcherTest.RanRecently/3 [logdog]
InBrowserCleanerUI/SRTFetcherTest.ReporterLogging_EnabledFirstRun/11 [logdog]
InBrowserCleanerUI/SRTFetcherTest.ReporterLogging_EnabledNoRecentLogging/2 [logdog]
InBrowserCleanerUI/SRTFetcherTest.ReporterLogging_EnabledNoRecentLogging/7 [logdog]
InBrowserCleanerUI/SRTFetcherTest.RunDaily/0 [logdog]
JavaScriptDialogTest.HandleJavaScriptDialog [logdog]
LaunchWebAuthFlowFunctionTest.InteractiveFirstNavigationSuccess [logdog]
LazyBackgroundPageApiTest.EventProcessCleanup [logdog]
LazyBackgroundPageApiTest.NaClInBackgroundPage [logdog]
LoadTimingBrowserTest.Preconnect [logdog]
LoadtimesExtensionBindingsTest.LoadTimesSameAfterClientInDocNavigation [logdog]
LoadtimesExtensionBindingsTest.LoadTimesSameAfterUserInDocNavigation [logdog]
LocationBarBrowserTest.ExtensionCanOverrideBookmarkStar [logdog]
LoginPromptBrowserTest.LoginPromptForXHRWithoutCredentials [logdog]
LoginPromptBrowserTest.MultipleRealmConfirmation [logdog]
MSE_ClearKey/EncryptedMediaTest.ConfigChangeVideo_ClearToEncrypted/0 [logdog]
MSE_ExternalClearKeyDecryptOnly/EncryptedMediaTest.ConfigChangeVideo_EncryptedToClear/0 [logdog]
ManageProfileUITest.Create_NoNameUpdateOnAvatarSelectedAfterEdit [logdog]
ManageProfileUITest.ShowCreateConfirmation [logdog]
MediaStreamDevicesControllerTestInstance/MediaStreamDevicesControllerTest.RequestMicCamBlockCam/1 [logdog]
MediaStreamPermissionTest.TestSecureOriginDenyIsSticky [logdog]
MessagingApiTest.MessagingCrash [logdog]
MetricsServiceBrowserTest.OOMRenderers [logdog]
NaClBrowserTestNewlib.ExitStatus254 [logdog]
NaClBrowserTestPnaclSubzero.PnaclErrorHandling [logdog]
NativeBindingsApiTest.WebRequest [logdog]
NetInternalsTest.netInternalsLogUtilExportImport [logdog]
NetInternalsTest.netInternalsLogUtilImportNetLogFile [logdog]
NetInternalsTest.netInternalsTimelineViewRange [logdog]
NoInBrowserCleanerUI/SRTFetcherTest.MultipleLaunches/1 [logdog]
NoInBrowserCleanerUI/SRTFetcherTest.NothingFound/1 [logdog]
NoStatePrefetchBrowserTest.Jpeg [logdog]
NoStatePrefetchBrowserTest.Png [logdog]
OutOfProcessPPAPITest.PaintAggregator [logdog]
PDFExtensionTest.DisablePlugin [logdog]
PDFTestFiles/PDFExtensionTest.Load/3 [logdog]
PPAPIFileChooserTest.FileChooser_SaveAs_Success [logdog]
PPAPINaClNewlibTest.MessageLoop_Basics [logdog]
PPAPINaClNewlibTest.NetAddress [logdog]
PPAPINaClNewlibTest.VideoSource [logdog]
PPAPINaClTestDisallowedSockets.TCPSocketPrivateDisallowed [logdog]
PageLoadMetricsBrowserTest.AbortReload [logdog]
PageLoadMetricsBrowserTest.NoDocumentWriteScript [logdog]
PageLoadMetricsBrowserTest.NoNavigation [logdog]
PasswordManagerBrowserTestBase.NoPromptForLoginFailedAndServerPushSeperateLoginForm_HttpsToHttp [logdog]
PasswordManagerBrowserTestBase.NoPromptIfLinkClicked [logdog]
PasswordManagerBrowserTestBase.PromptForFetchSubmit [logdog]
PasswordManagerBrowserTestBase.PromptForInputElementWithoutName [logdog]
PasswordManagerBrowserTestBase.PromptForSubmitFromIframe [logdog]
PaymentRequestCanMakePaymentMetricsTest.Called_False_Shown_Completed [logdog]
PaymentRequestCanMakePaymentMetricsTest.Called_False_Shown_UserAborted [logdog]
PaymentRequestCanMakePaymentMetricsTest.Called_True_Shown_Completed [logdog]
PaymentRequestCanMakePaymentMetricsTest.Called_True_Shown_OtherAborted [logdog]
PaymentRequestCanMakePaymentMetricsTest.NotCalled_Shown_OtherAborted [logdog]
PaymentRequestCreditCardEditorTest.EnteringInvalidCardNumber_AndFixingIt [logdog]
PaymentRequestCreditCardEditorTest.EnteringUnsupportedCardType [logdog]
PaymentRequestNoShippingTest.OpenAndReload [logdog]
PlatformAppBrowserTest.ActiveAppsAreRecorded [logdog]
PlatformAppUrlRedirectorBrowserTest.MismatchingWindowOpenInAppNotIntercepted [logdog]
PlatformAppWithFileBrowserTest.LaunchWithRelativeFile [logdog]
PolicyTest.DeveloperToolsDisabledExtensionsDevMode [logdog]
PolicyTest.DownloadDirectory [logdog]
PolicyTest.ExtensionInstallWhitelist [logdog]
PolicyTest.PRE_PRE_DefaultCookiesSetting [logdog]
PredictorBrowserTest.CrossSiteTwoRedirectsPredictionWithNoPath [logdog]
PredictorBrowserTest.DoNotEvictRecentlyUsed [logdog]
PredictorBrowserTest.PredictBasedOnSubframeRedirect [logdog]
PrefHashBrowserTestRegistryValidationFailureInstance/PrefHashBrowserTestRegistryValidationFailure.PRE_RegistryValidationFailure/0 [logdog]
PrerenderBrowserTest.FirstContentfulPaintTimingTwoPages [logdog]
PrerenderBrowserTest.PrerenderClientRedirectNavigateToSecond [logdog]
PrerenderBrowserTest.PrerenderQuickQuit [logdog]
PrerenderBrowserTest.PrerenderSafeBrowsingIframe [logdog]
PreservedWindowPlacement.PRE_Test [logdog]
PrintPreviewWebUITest.SourceIsPDFCapabilities [logdog]
PrintPreviewWebUITest.TestPrintPreviewRestoreLocalDestination [logdog]
ProcessManagerBrowserTest.ExtensionProcessReuse [logdog]
ProcessManagerBrowserTest.NoBackgroundPage [logdog]
ProfileBrowserTest.CreateOldProfileSynchronous [logdog]
ProfileBrowserTest.URLFetcherUsingExtensionContextDuringShutdown [logdog]
ProxySettingsApiTest.ProxyEventsInvalidProxy [logdog]
PushMessagingBrowserTest.PushEventAllowSilentPushCommandLineFlag [logdog]
PushMessagingBrowserTest.SubscribeSuccessNotificationsPrompt [logdog]
RedirectTest.ClientCancelled [logdog]
ReferrerPolicyTest.MiddleClickRedirect [logdog]
RegisterProtocolHandlerBrowserTest.UnregisterProtocolHandler [logdog]
ResourcePrefetchPredictorBrowserTest.Redirect [logdog]
SBNavigationObserverBrowserTest.WindowLocationRedirect [logdog]
SRC_ClearKey/EncryptedMediaTest.Playback_VideoAudio_WebM_Opus/0 [logdog]
SRC_ExternalClearKey/EncryptedMediaTest.Playback_VP9Video_WebM_Fullsample/0 [logdog]
SSLUITest.ClientRedirectFromMixedContentSSLState [logdog]
SSLUITest.TestRunsInsecuredContentRandomizeHash [logdog]
SSLUITestWithExtendedReporting.TestBrokenHTTPSProceedReporting [logdog]
SafeBrowsingBlockingPageBrowserTestWithThreatTypeAndIsolationSetting/SafeBrowsingBlockingPageBrowserTest.IframeDontProceed/4 [logdog]
SafeBrowsingBlockingPageBrowserTestWithThreatTypeAndIsolationSetting/SafeBrowsingBlockingPageBrowserTest.ProceedDisabled/3 [logdog]
SafeBrowsingBlockingPageBrowserTestWithThreatTypeAndIsolationSetting/SafeBrowsingBlockingPageBrowserTest.SecurityStateDowngradedForSubresourceInterstitial/3 [logdog]
SafeBrowsingBlockingPageBrowserTestWithThreatTypeAndIsolationSetting/SafeBrowsingBlockingPageBrowserTest.SecurityStateGoBackOnSubresourceInterstitial/3 [logdog]
SafeBrowsingBlockingPageBrowserTestWithThreatTypeAndIsolationSetting/SafeBrowsingBlockingPageBrowserTest.WhitelistIframeRevisit/3 [logdog]
SafeBrowsingBlockingPageIDNTestWithThreatType/SafeBrowsingBlockingPageIDNTest.SafeBrowsingBlockingPageDecodesIDN/3 [logdog]
SearchByImageBrowserTest.ImageSearchWithCorruptImage [logdog]
SecurityStateTabHelperTest.BrokenHTTPS [logdog]
SecurityStateTabHelperTest.SecurityLevelDowngradedOnDataUrl [logdog]
SessionRestoreTest.TabWithDownloadDoesNotGetRestored [logdog]
SettingsResetPromptDialogTest.InvokeDialog_sp1_ext2 [logdog]
SettingsResetPromptModelBrowserTest.ExtensionsToDisable_DefaultSearch [logdog]
SettingsWindowManagerTest.SettingsWindowMultiProfile [logdog]
SmartSessionRestoreTest.PRE_CorrectLoadingOrder [logdog]
SpellingMenuObserverTest.SuggestionsForceTopSeparator [logdog]
SpellingOptionsSubMenuObserverTest.ToggleSpelling [logdog]
StartupBrowserCreatorFirstRunTest.FirstRunTabsWithRestoreSession [logdog]
TabRestoreTest.RestoreTabWithSpecialURLOnBack [logdog]
TaskManagerBrowserTest.DevToolsOldDockedWindow [logdog]
TaskManagerBrowserTest.NoticeHostedAppTabAfterReload [logdog]
TaskManagerBrowserTest.NoticeHostedAppTabBeforeReload [logdog]
TaskManagerBrowserTest.WebWorkerJSHeapMemory [logdog]
TaskManagerMemoryCoordinatorBrowserTest.MemoryState [logdog]
UnloadTest.BrowserCloseInfiniteBeforeUnload [logdog]
UnloadTest.BrowserCloseWithInnerFocusedFrame [logdog]
V4SafeBrowsingServiceTest.CheckDownloadUrl [logdog]
V4SafeBrowsingServiceTest.CheckUnwantedSoftwareUrl [logdog]
V4SafeBrowsingServiceTest.UnwantedImgIgnored [logdog]
WebNavigationApiTest.GetFrame [logdog]
WebUIAccessibilityAuditBrowserTest_TestsDisabledInFixture.testRunningAuditManuallySeveralTimes [logdog]
WebUIBrowserAsyncTest.TestAsyncFailsAssert [logdog]
WebUIResourceBrowserTest.RepeatingButtonTest [logdog]
WebUIWebViewBrowserTest.AddContentScriptWithSameNameShouldOverwriteTheExistingOne [logdog]
WebViewTests/WebViewFocusTest.TouchFocusesEmbedder/0 [logdog]
WebViewTests/WebViewSizeTest.AutoSize/1 [logdog]
WebViewTests/WebViewSizeTest.Shim_TestResizeEvents/1 [logdog]
WebViewTests/WebViewTest.AddRemoveWebView_AddRemoveWebView/1 [logdog]
WebViewTests/WebViewTest.BlobInWebviewAccessibleResource/0 [logdog]
WebViewTests/WebViewTest.IndexedDBIsolation/1 [logdog]
WebViewTests/WebViewTest.LoadWebviewInaccessibleResource/0 [logdog]
WebViewTests/WebViewTest.MediaAccessAPIDeny_TestDenyThenAllowThrows/1 [logdog]
WebViewTests/WebViewTest.ScreenCoordinates/0 [logdog]
WebViewTests/WebViewTest.Shim_TestAssignSrcAfterCrash/1 [logdog]
WebViewTests/WebViewTest.Shim_TestLoadAbortIllegalJavaScriptURL/0 [logdog]
WebViewTests/WebViewTest.Shim_TestRemoveWebviewAfterNavigation/0 [logdog]
WebViewTests/WebViewTest.Shim_TestWebViewInsideFrame/1 [logdog]
WebstoreInlineInstallerTest.ReinstallDisabledExtension [logdog]

There's a TODO around the code which is triggering this ()

// TODO(fdoray): Remove this when M56 hits stable.

fdoray -- is this code still required? Is this the result of a missing registry key? (And not checking whether the call to the RegKey constructor actually succeeded?)