Add memcheck annotation and remove suppression.

This is really re-landing 112937 and attempting to avoid a warning from the
Linux builder.

R=jar@chromium.org
BUG=106326
TEST=needs to run on the CQ


Review URL: http://codereview.chromium.org/8796006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112944 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed