Add a suppression for the Mac Valgrind test_shell_test leak.
Add a suppression for the Mac Valgrind test_shell_test leak.

BUG=12571
Review URL: http://codereview.chromium.org/115739

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@16844 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser