Gardening: Remove external/wpt/service-workers/stub* expectations.

third_party/WebKit/LayoutTests/TestExpectations

 # Intentional failures to test the layout test system.
 Bug(intentional) [ Android Linux Win Mac10.10 Mac10.11 Retina ] harness-tests/crash.html [ Crash ]
 crbug.com/644303 [ Mac10.9 ] harness-tests/crash.html [ Crash Timeout ]
 Bug(intentional) harness-tests/timeout.html [ Timeout ]
 
 # ====== Oilpan-only failures from here ======
 # Most of these actually cause the tests to report success, rather than
 # failure. Expected outputs will be adjusted for the better once Oilpan
 # has been well and truly enabled always.
 
@@ skipping 2373 matching lines @@
 
 crbug.com/686057 [ Mac ] external/wpt/html/webappapis/system-state-and-capabilities/the-navigator-object/NavigatorID.html [ Pass Failure ]
 
 crbug.com/508728 external/wpt/workers/Worker_cross_origin_security_err.htm [ Timeout ]
 
 # This test needs to be updated: fails because it expects showModalDialog and some other APIs.
 crbug.com/508728 external/wpt/html/browsers/the-window-object/security-window/window-security.html [ Failure ]
 
 crbug.com/602693 external/wpt/service-workers/service-worker/fetch-frame-resource.https.html [ Timeout ]
 
-# TODO(shimazu): remove the following after the wpt auto-roller imports
-# dc159d2c7ab068b4c6e51774b595b355781efde6 or later from the github repository.
-crbug.com/602693 external/wpt/service-workers/stub-3.1-service-worker-obj.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-3.2-navigator-service-worker.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.1-service-worker-global-scope.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.2-client.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.3-service-worker-clients.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.4-request-objects.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.5-response-objects.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.6.2-cache.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.6.3-cache-storage.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.7.1-install-phase-event.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.7.2.1-install-event-section.html [ Failure ]
-crbug.com/602693 external/wpt/service-workers/stub-4.7.4.1-fetch-event-section.html [ Failure ]
-
 # This test requires a special browser flag and seems not suitable for a wpt test, see bug.
 crbug.com/691944 external/wpt/service-workers/service-worker/update-after-oneday.https.html [ Skip ]
 
 # These tests (erroneously) see a platform-specific User-Agent header
 crbug.com/595993 external/wpt/service-workers/service-worker/fetch-header-visibility.https.html [ Failure ]
 crbug.com/595993 external/wpt/service-workers/service-worker/request-end-to-end.https.html [ Failure ]
 
 crbug.com/666628 http/tests/inspector-enabled/console-stack-overflow-source-url.html [ Pass Failure ]
 crbug.com/666628 virtual/mojo-loading/http/tests/inspector-enabled/console-stack-overflow-source-url.html [ Pass Failure ]
 
@@ skipping 169 matching lines @@
 crbug.com/688486 external/wpt/service-workers/service-worker/fetch-request-redirect.https.html [ Failure Pass ]
 crbug.com/688486 external/wpt/service-workers/service-worker/fetch-request-resources.https.html [ Failure Pass ]
 
 # Sheriff failures 2017-02-13
 crbug.com/691423 [ Mac ] fast/frames/location-change-no-file-access.html [ Failure Pass ]
 
 # Sheriff failures 2017-02-21
 crbug.com/73609 http/tests/media/video-play-stall.html [ Pass Timeout ]
 crbug.com/73609 virtual/mojo-loading/http/tests/media/video-play-stall.html [ Pass Timeout ]
 crbug.com/694467 fast/text/line-break-8bit-after-16bit.html [ Pass Failure ]