The right moment for fixing style errors is when working on the CL, not when
committing it. And this makes non-committers bump into this check too when
uploading changes.

BUG=none

Review URL: https://codereview.chromium.org/14070005
Patch from Marja Hölttä <marja@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14231 ce2b1a6d-e550-0410-aec6-3dcde31c8c00