Update test expectations.
Update test expectations.

Not flaky LayoutTests/websocket/tests/frame-length-skip.html
http://src.chromium.org/viewvc/chrome/trunk/src/webkit/tools/layout_tests/flakiness_dashboard.html#tests=websocket

BUG=28044
TEST=none

Review URL: http://codereview.chromium.org/460011

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@33557 0039d316-1c4b-4281-b951-d872f2087c98

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