Suppress a leak introduced in a webkit roll last week.
Suppress a leak introduced in a webkit roll last week.

BUG=70924
TBR=jknotten

git-svn-id: http://src.chromium.org/svn/trunk/src@72657 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1882b004afc85c545e9537fff51e5c419f46aff5
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