Enable WindowOpenApiTest.* for Mash.

No flakes in single or multi process mash over 30 local runs.

Bug: 815379
Change-Id: I3d1a7c62ee4d431e8b092a625d641ff91b6b2730
Reviewed-on: https://chromium-review.googlesource.com/c/1308654Reviewed-by: James Cook <jamescook@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#604068}

testing/buildbot/filters/chromeos.mash.fyi.browser_tests.filter

@@ -233,10 +233,6 @@
 # DCHECK in DelegatedFrameHost
 -SafeBrowsingTriggeredPopupBlockerBrowserTest.NoFeature_NoMessages
 
-# https://crbug.com/815379
--WindowOpenApiTest.RemoveLockedFullscreenFromWindow
--WindowOpenApiTest.RemoveLockedFullscreenFromWindowWithoutPermission
-
 # App list code flake: https://crbug.com/847154 https://crbug.com/843429
 -MultiProfileFileManagerBrowserTest.*
 

testing/buildbot/filters/chromeos.single_process_mash.browser_tests.filter

@@ -164,13 +164,6 @@
 # Flaky tests. crbug.com/880584
 -UnifiedAutoplaySettingBrowserTest.*
 
-# Window Open API tests.  https://crbug.com/815379
--WindowOpenApiTest.OpenLockedFullscreenWindow
--WindowOpenApiTest.RemoveLockedFullscreenFromWindow
--WindowOpenApiTest.RemoveLockedFullscreenFromWindowWithoutPermission
--WindowOpenApiTest.UpdateWindowToLockedFullscreen
--WindowOpenApiTest.VerifyCommandsInLockedFullscreen
-
 # Flaky tests. crbug.com/833144
 -GetAuthTokenFunctionPublicSessionTest.NonWhitelisted