[lacros] Disable a few more browser_tests

In order to promote browser_tests to run in non-experimental mode so
that it's sherrifed to prevent regressions.

Bug: 1111979
Change-Id: I7668d920cb2ed09583bc3eeb606aac0759d502cd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2353352Reviewed-by: Erik Chen <erikchen@chromium.org>
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797439}

testing/buildbot/filters/lacros.browser_tests.filter

@@ -88,6 +88,7 @@
 -BrowserViewTest.GetAccessibleTabModalDialogTree
 -BrowsingDataRemoverBrowserTest.StorageRemovedFromDisk
 -CaptivePortalBrowserTest.SecureDnsErrorTriggersCheck
+-CaptivePortalBrowserTest.SlowLoadSecureDnsErrorAfterLogin
 -CaptivePortalBrowserTest.SlowLoadSecureDnsErrorWithCaptivePortal
 -ChromeSitePerProcessTest.PopupWindowFocus
 -ClientHintsBrowserTest.ClientHintsClearSession
@@ -103,6 +104,7 @@
 -ContextMenuBrowserTest.PngImageDownscaleToPng
 -ContextMenuBrowserTest.RealMenu
 -ContextMenuBrowserTest.RequestPngForGifImage
+-ContextMenuBrowserTest.SuggestedFileNameCrossOrigin
 -CrComponentsCertificateManagerV3Test.All
 -CrComponentsManagedFootnoteV3Test.All
 -CreativeOriginAdsPageLoadMetricsObserverBrowserTest.CreativeOriginStatusWithThrottlingNestedThrottled
@@ -175,6 +177,7 @@
 -PaymentRequestShippingAddressEditorTest.FocusFirstInvalidField_NotName
 -PDFExtensionTestWithTestGuestViewManager.CSPDoesNotBlockEmbedStyles
 -PDFExtensionTestWithTestGuestViewManager.CSPFrameAncestorsOverridesXFrameOptions
+-PDFExtensionTestWithTestGuestViewManager.PdfExtensionLoadedInGuest
 -PDFExtensionTestWithTestGuestViewManager.PdfInMainFrameHasFocus
 -PermissionRequestManagerWithBackForwardCacheBrowserTest.RequestsForPagesInCacheNotGrouped
 -PermissionsApiTest.AlwaysAllowed
@@ -513,4 +516,4 @@
 -WebViewTest.SelectShowHide
 -WebViewTest.Shim_TestDisplayNoneWebviewRemoveChild
 -WelcomeA11y.WelcomeFlow_listitem
--WorkerTaskProviderBrowserTest.CreateTasksForMultiProfiles
\ No newline at end of file
+-WorkerTaskProviderBrowserTest.CreateTasksForMultiProfiles