NSS: Unlock crypto devices when populating cert manager.

BUG=42073
TEST=try to use cert manager with "unfriendly" device.

Review URL: http://codereview.chromium.org/6580058

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@77024 0039d316-1c4b-4281-b951-d872f2087c98
11 files changed