Fix inconsistencies wrt whitespaces.

This relands r19196 with fixes.

BUG=v8:3109
LOG=Y
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/141323007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00