Call two more shutdown functions, and set an environment variable, 
to make nss play well with valgrind, as recommended by Wan-Teh in
http://groups.google.com/group/mozilla.dev.tech.crypto/msg/49fe8582df376d06

Set the same environment variables in chrome_test.sh/valgrind_test.py 
and valgrind.sh, and explain which is which.

Review URL: http://codereview.chromium.org/42326

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@12093 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed