Suppressing memory leak on mac valgrind bots.
Suppressing memory leak on mac valgrind bots.

BUG=73036
TEST=mac valgrind bots should cycle green

Review URL: http://codereview.chromium.org/6499021

git-svn-id: http://src.chromium.org/svn/trunk/src@74976 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: ba36270a109d4f601ce50c01e793535a5bf86c6a
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