Remove accidental comment in TabContents.
Remove accidental comment in TabContents.

BUG=none
TEST=No silly presubmit checks for tab_contents.cc.
TBR=estade
Review URL: http://codereview.chromium.org/6368119

git-svn-id: http://src.chromium.org/svn/trunk/src@73905 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 45294966621027b6c7f83259cb40b4e045fc0e76
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