[GTK] Remove some obsolete expected failures.
https://bugs.webkit.org/show_bug.cgi?id=175674
Unreviewed test gardening.
Patch by Ms2ger <Ms2ger@gmail.com> on 2017-08-18
* platform/gtk/TestExpectations:
- imported/w3c/web-platform-tests/IndexedDB/keyorder.htm: passing since r204279.
- imported/w3c/web-platform-tests/resource-timing/rt-cors.html: passing since r212944 and r212993.
- imported/w3c/web-platform-tests/resource-timing/rt-cors.worker.html: passing since r212944 and r212993.
- imported/w3c/web-platform-tests/webrtc/getstats.html: passing since test update and rebaseline in r217225.
- mathml/opentype/large-operators-displaystyle-dynamic.html: used to be flaky, seems to be passing consistently now.
- media/media-fullscreen-return-to-inline.html: likely passing since r218270.
- media/video-fast-seek.html: passing since r207879-r207894.
- platform/gtk/scrollbars/main-frame-scrollbar-horizontal-wheel-scroll.html: passing since r205075.
- security/contentSecurityPolicy/video-with-data-url-allowed-by-media-src-star.html: flaky.
- storage/indexeddb/cursor-key-order.html: likely passing since r209135.
- svg/dom/SVGScriptElement/script-change-externalResourcesRequired-while-loading.svg: flaky.
- svg/repaint/add-outline-property-on-root.html: passing since r211277
- svg/repaint/remove-outline-property-on-root.html: passing since r211277
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@220911
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