Pass through *SAN_OPTIONS for tests.

BUG=361678, 397119
R=dpranke@chromium.org

Review URL: https://codereview.chromium.org/626893003

git-svn-id: svn://svn.chromium.org/blink/trunk@183329 bbb929c8-8fbe-4397-9dbb-9b2b20218538