Valgrind: Widen a suppression.
Valgrind: Widen a suppression.

BUG=42590
TEST=Mac Valgrind gets greener.
TBR=wtc
Review URL: http://codereview.chromium.org/1805001

git-svn-id: http://src.chromium.org/svn/trunk/src@45676 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 6a3bdfb64a78a858eee9e5603c03fdf26ee043f6
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