Gardening: service-worker-v8-cache.js only flakily times out.

Remove the failing and crashing expectations. It seems to only pass
or timeout these days. Also it no longer fails on NetworkService.

Bug: 849670
Change-Id: Ie5d67c154e06bcd32d77f32648d31bfebb8466fb
Reviewed-on: https://chromium-review.googlesource.com/c/1352081Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611523}

third_party/blink/web_tests/FlagExpectations/enable-features=NetworkService

@@ -17,9 +17,6 @@ crbug.com/862886 external/wpt/service-workers/service-worker/navigation-preload/
 crbug.com/896924 http/tests/inspector-protocol/network/interception-multiclient.js [ Pass ]
 crbug.com/899303 http/tests/inspector-protocol/fetch/fetch-basic.js [ Pass ]
 
-# Flaky on non-NetworkService (disabled), consistent failing on NetworkService. Probably due to DCHECK.
-crbug.com/849670 http/tests/devtools/service-workers/service-worker-v8-cache.js [ Pass Failure ]
-
 # This passes in content_shell but not in chrome with network service disabled,
 # because content_shell does not add the about: handler. With network service
 # enabled this fails in both content_shell and chrome.

third_party/blink/web_tests/TestExpectations

@@ -4298,7 +4298,7 @@ crbug.com/702837 fast/text/aat-morx.html [ Skip ]
 
 crbug.com/688670 external/wpt/html/semantics/embedded-content/media-elements/track/track-element/track-cue-rendering-after-controls-removed.html [ Pass Failure ]
 
-crbug.com/849670 http/tests/devtools/service-workers/service-worker-v8-cache.js [ Pass Crash Failure Timeout ]
+crbug.com/849670 http/tests/devtools/service-workers/service-worker-v8-cache.js [ Pass Timeout ]
 
 crbug.com/664858 virtual/threaded/fast/scroll-behavior/overflow-scroll-animates.html [ Skip ]
 crbug.com/664858 virtual/threaded/fast/scroll-behavior/smooth-scroll/horizontal-smooth-scroll-in-rtl.html [ Skip ]