Rename cert_based_register_request to match server proto.

BUG=645078

Review-Url: https://codereview.chromium.org/2412623003
Cr-Original-Commit-Position: refs/heads/master@{#424714}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 82309f2139312d1de9968cec5c5a2251ec872306
1 file changed