Revert accidental commenting-out of download_util.cc parts.
Revert accidental commenting-out of download_util.cc parts.

This is a follow-up after http://codereview.chromium.org/3826014

TBR=sky

BUG=59365
TEST=see bug

Review URL: http://codereview.chromium.org/3880001

git-svn-id: http://src.chromium.org/svn/trunk/src@63078 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 83eb7347fffd0f1f03682bf1826d9ed688a6d842
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