Remove include_subdomains from branchtrack.com.

Reason given: branchtrack.com is "using tumblr with subdomain, but it's not supported over https."

BUG=527947
TBR=agl@chromium.org

Review URL: https://codereview.chromium.org/1406813002

Cr-Commit-Position: refs/heads/master@{#354126}
2 files changed