Add two expectations to unblock wpt-importer

No-Try because tests haven't been imported.

TBR=foolip

No-Try: True
Bug: 870526, 870528
Change-Id: I72df4669a5f22d7676ac289eb0c208633b6b019c
Reviewed-on: https://chromium-review.googlesource.com/1161559Reviewed-by: Robert Ma <robertma@chromium.org>
Commit-Queue: Robert Ma <robertma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580396}

third_party/WebKit/LayoutTests/TestExpectations

@@ -2730,7 +2730,11 @@ crbug.com/849859 external/wpt/css/css-animations/CSSAnimation-pausing.tentative.
 crbug.com/849859 external/wpt/css/css-animations/Element-getAnimations-dynamic-changes.tentative.html [ Failure ]
 crbug.com/849859 external/wpt/web-animations/timing-model/animations/pausing-an-animation.html [ Failure ]
 
+# wptserve raises exceptions when running this test:
+crbug.com/870526 external/wpt/payment-handler/idlharness.https.any.serviceworker.html [ Skip ]
+
 # ====== New tests from wpt-importer added here ======
+crbug.com/626703 external/wpt/clear-site-data/executionContexts.sub.html [ Timeout ]
 crbug.com/626703 [ Win10 ] external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004.html [ Failure ]
 crbug.com/626703 [ Linux Mac Win7 ] external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004.html [ Failure ]
 crbug.com/626703 [ Mac10.12 Mac10.13 ] external/wpt/service-workers/service-worker/clients-matchall-order.https.html [ Timeout ]