Re-enable some vulkan_content_browsertests

Some of the bugs on Android's vulkan_content_browsertests have been fixed
so we will re-enable them.

TBR=backer@chromium.org
TEST=vulkan_content_browsertests
Bug: 1037939, 1043934

Change-Id: I43f0890fb13fdf1abbbd89ce267ca9e40933b8c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2008362Reviewed-by: Jonathan Ross <jonross@chromium.org>
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733618}

testing/buildbot/filters/gpu.skiarenderer_vulkan_content_browsertests.filter

@@ -8,14 +8,10 @@
 -MSE_*ClearKey/EncryptedMediaTest.*
 -SRC_*ClearKey/EncryptedMediaTest.*
 
-# SkiaOutputSurfaceImplOnGpu::MakeCurrent Fails. https://crbug.com/1012282
+# Non-Existent Mailbox Error During Deletion. https://crbug.com/1043934
 -*CompositorImplLowEndBrowserTest.CompositorImplDropsResourcesOnBackground*
 
 # FeatureList Flakes. https://crbug.com/1012372
 -NavigationBrowserTest.HistoryBackCancelPendingNavigationUserGesture/1
 -SitePerProcessBrowserTest.*
--TextFragmentAnchorBrowserTest.DisabledOnScriptNavigation/0
-
+-TextFragmentAnchorBrowserTest.DisabledOnScriptNavigation/0
\ No newline at end of file
-# crbug.com/1037939
--BackForwardCacheBrowserTest.VideoSuspendAndResume
--P/CompositorImplBrowserTestRefreshRate.VideoPreference/0