Suppress flaky layout tests.

 fast/events/context-no-deselect.html
  - Suppress on all platforms, not just Windows.

 external/wpt/service-workers/service-worker/
    about-blank-replacement.https.html
  - Timing out in main and virtual test suites.

 http/tests/navigation/rename-subframe-goback.html
  - Fix linked bug ID.

Bug: 663847, 855816, 856330
Change-Id: If2178c22714e64f6cd76267323f26634a18f9347
Tbr: alph@chromium.org
Tbr: tkent@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/1114132
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#570302}

third_party/WebKit/LayoutTests/TestExpectations

@@ -2594,7 +2594,7 @@ crbug.com/564109 [ Win ]  http/tests/webfont/font-display-intervention.html [ Pa
 
 crbug.com/399951 http/tests/mime/javascript-mimetype-usecounters.html [ Pass Failure ]
 
-crbug.com/663847 [ Linux ] fast/events/context-no-deselect.html [ Failure Pass ]
+crbug.com/663847 fast/events/context-no-deselect.html [ Failure Pass ]
 
 crbug.com/594672 fast/events/iframe-object-onload.html [ Failure Pass ]
 crbug.com/594672 fast/events/scale-and-scroll-iframe-body.html [ Failure Pass ]
@@ -4730,4 +4730,5 @@ crbug.com/855055 [ Mac ] virtual/threaded/animations/interpolation/svg-stroke-da
 # Sheriff 2018-06-25
 crbug.com/855873 [ Mac Win7 ] fast/speech/scripted/start-multiple.html [ Pass Crash ]
 crbug.com/855860 [ Linux ] virtual/outofblink-cors/http/tests/fetch/serviceworker-proxied/thorough/redirect-password-base-https-other-https.html [ Pass Timeout ]
-crbug.com/ [ Win7 ] virtual/stable/http/tests/navigation/rename-subframe-goback.html [ Pass Timeout ]
+crbug.com/855816 [ Win7 ] virtual/stable/http/tests/navigation/rename-subframe-goback.html [ Pass Timeout ]
+crbug.com/856330 external/wpt/service-workers/service-worker/about-blank-replacement.https.html [ Pass Timeout ]