Fix TestExpectaitons for failing tests on Mac Retina

https://ci.chromium.org/buildbot/chromium.webkit/WebKit%20Mac10.13%20%28retina%29/?limit=200
The tests have been failing for a long time

TBR: hajimehoshi@chromium.org
Bug: 866785
Change-Id: Ia884e0aca4fcbb2c8ab47f38cf5ea48c2f22538f
Reviewed-on: https://chromium-review.googlesource.com/1148081Reviewed-by: Hajime Hoshi <hajimehoshi@chromium.org>
Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577455}

third_party/WebKit/LayoutTests/TestExpectations

@@ -4647,3 +4647,11 @@ crbug.com/864994 [ Mac ] external/wpt/encoding/legacy-mb-korean/euc-kr/euckr-dec
 crbug.com/865432 [ Linux ] external/wpt/workers/modules/dedicated-worker-import-blob-url.any.worker.html [ Timeout Pass ]
 
 crbug.com/865755 [ Debug ] virtual/threaded/fast/scroll-behavior/smooth-scroll/mousewheel-scroll.html [ Failure Pass ]
+
+crbug.com/866785 [ Mac ] fast/forms/select/select-initial-position.html [ Failure Pass ]
+crbug.com/866785 [ Mac ] fast/parser/001.html [ Failure Pass ]
+crbug.com/866785 [ Mac ] fast/table/backgr_border-table-quirks-collapsed-border.html [ Failure Pass ]
+crbug.com/866785 [ Mac ] fast/table/backgr_border-table-quirks.html [ Failure Pass ]
+crbug.com/866785 [ Mac ] svg/as-border-image/svg-as-border-image-2.html [ Failure Pass ]
+crbug.com/866785 [ Mac ] svg/as-border-image/svg-as-border-image.html [ Failure Pass ]
+crbug.com/866785 [ Mac ] virtual/new-remote-playback-pipeline/media/controls/text-track-menu-pointer-selection.html [ Failure Pass ]