Valgrind: Suppress a CrOS memory leak in FilebrowseHandler::Init.
Valgrind: Suppress a CrOS memory leak in FilebrowseHandler::Init.

BUG=43914
TEST=Valgrind CrOS goes green.
TBR=dhg
Review URL: http://codereview.chromium.org/2017011

git-svn-id: http://src.chromium.org/svn/trunk/src@46962 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: f80d1faf47a19e9831eadc0a2a9df8a513bdea37
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