Fix typo in layout test in rarely taken code branch

Review URL: https://codereview.chromium.org/1011393006

git-svn-id: svn://svn.chromium.org/blink/trunk@192167 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed
tree: 2c87c39d3f7cd8829b482a5689cf77b3e7fa641a
  1. third_party/