Clarify file-stream comments.
Clarify file-stream comments.

Patch by phajdan.jr@gmail.com
R=darin

Review URL: http://codereview.chromium.org/12647



git-svn-id: http://src.chromium.org/svn/trunk/src@5986 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: e0833c40c2a9c0e3429f667e453c3a809532935e
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser