PlzNavigate: update content_browsertests filter

This CL updates the test filter for content_browsertests for
browser-side navigation. It removes tests that are no longer failing or
do not exist anymore.

BUG=475027

Review-Url: https://codereview.chromium.org/2342363002
Cr-Commit-Position: refs/heads/master@{#419186}

testing/buildbot/filters/browser-side-navigation.linux.content_browsertests.filter

 -BackgroundSyncBrowserTest*
 -IFrameZoomBrowserTest.RedirectToPageWithSubframeZoomsCorrectly
 -IFrameZoomBrowserTest.SubframesDontZoomIndependently
--NavigationControllerBrowserTest.BackTwiceToIframeWithContent
 -NavigationControllerBrowserTest.EnsureSamePageNavigationUpdatesFrameNavigationEntry
--NavigationControllerBrowserTest.RaceCrossOriginNavigationAndSamePageHistoryNavigation
--NavigationHandleImplHttpsUpgradeBrowserTest.*
--RenderFrameHostManagerTest.RestoreSubframeFileAccessForHistoryNavigation
 -RequestDataResourceDispatcherHostBrowserTest.*
 -ServiceWorker*