Update Channel ID API to use a callback.

R=agl@chromium.org, rsleevi@chromium.org

Review URL: https://codereview.chromium.org/35493002

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/openssl@230363 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
6 files changed