Rebaseline svg/W3C-I18N tests on windows

Since r159614 the W3C-I18N tests are no longer flaky, remove the flaky
expectation and rebaseline.

BUG=306691
TBR=ojan@chromium.org

Review URL: https://codereview.chromium.org/27235008

git-svn-id: svn://svn.chromium.org/blink/trunk@159681 bbb929c8-8fbe-4397-9dbb-9b2b20218538