Display the error code when certificates fail to add

We really want to make error strings, but this is a start.

BUG=43906
TEST=none

Review URL: http://codereview.chromium.org/2859026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@52499 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed