[lacros] Disable some flaky tests

Briefly went through the last 200 jobs and disable these flaky tests
caused the jobs fail.

Bug: 1111979
Change-Id: I33211e2e3eb14de37927fe7e35e476a1debe57bc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2399501
Auto-Submit: Sven Zheng <svenzheng@chromium.org>
Reviewed-by: Yuke Liao <liaoyuke@chromium.org>
Commit-Queue: Sven Zheng <svenzheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805108}

testing/buildbot/filters/lacros.browser_tests.filter

@@ -225,4 +225,5 @@
 -MediaRouterUIBrowserTest.PinAndUnpinToolbarIcon
 -MultiActionAPITest.PopupCreation/*
 -PDFExtensionClipboardTest.CombinedShiftArrowPresses
+-PDFExtensionTestWithTestGuestViewManager.CSPFrameAncestorsOverridesXFrameOptions*
 -PopupTrackerBrowserTest.ControlClick_HasTracker

testing/buildbot/filters/lacros.content_browsertests.filter

@@ -3,4 +3,6 @@
 -OutOfProcessPPAPITest.TrueTypeFont
 
 # Following tests are flaky.
+-All/SitePerProcessBrowserTest.TwoSubframesCreatePopupMenuWidgetsSimultaneously*
 -All/WebContentsVideoCaptureDeviceBrowserTestP.CapturesContentChanges*
+-PDFExtensionTestWithTestGuestViewManager*
\ No newline at end of file

testing/buildbot/filters/lacros.interactive_ui_tests.filter

@@ -53,3 +53,4 @@
 -NewTabPageDoodleShareDialogFocusTest.All
 -PlatformNotificationServiceBrowserTest.TestShouldDisplayMultiFullscreen
 -PopupBlockerBrowserTest.BlockWebContentsCreationIncognito
+-NotificationsApiTest*