bfcache: Update browser_tests filter.

Add 4 tests that regressed recently after:
https://chromium-review.googlesource.com/c/chromium/src/+/1654739

Bug: 991194

TBR=ahemery@chromium.org

Change-Id: I9f3c93ab99a3c34e7cff0a936078f1343d98bd93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1738377Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
Commit-Queue: Arthur Sonzogni <arthursonzogni@chromium.org>
Auto-Submit: Arthur Sonzogni <arthursonzogni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#684340}

testing/buildbot/filters/bfcache.browser_tests.filter

@@ -42,3 +42,10 @@
 -TabHoverCardBubbleViewBrowserTest.WidgetVisibleOnTabFocus
 -URLLoaderImplementation/PreviewsLitePageServerBrowserTest.LitePagePreviewsNavigation/0
 -URLLoaderImplementation/PreviewsLitePageServerBrowserTest.LitePagePreviewsNavigation/1
+
+# Timeout while waiting for a frozen page to execute Javascript.
+# https://crbug.com/991194
+-TabManagerTest.UnfreezeTabOnNavigationEvent
+-TabManagerTest.TabFreezeAndMakeVisible
+-TabManagerTest.TabFreezeAndUnfreeze
+-TabManagerTest.TabFreezeAndUrgentDiscard