need to rebaseline svg/css/text-gradient-shadow.svg
need to rebaseline svg/css/text-gradient-shadow.svg

inspired by https://codereview.chromium.org/1022673008/

BUG=470123
NOTRY=True

Review URL: https://codereview.chromium.org/1026293003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@192440 bbb929c8-8fbe-4397-9dbb-9b2b20218538

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk