Fix an innocuous dcheck when going to view-cache.
Fix an innocuous dcheck when going to view-cache.

Don't initialize an IOBUffer if the needed size is zero.


Review URL: http://codereview.chromium.org/60054

git-svn-id: http://src.chromium.org/svn/trunk/src@13030 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1f2f49281c6eef6697f8249dfdddfd0f1984ae9f
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