GitLab

This change should be a no-op as it keeps the DEPS'd revision
the same.  Rather than DEPSing it two sub-repos it simply
includes the since top level repo.

Once this change is in we can switch to using a github mirror
rather than an SVN mirror. Once that its done we can look
at rollin the DEPSs forward.

Also, include a temporary exclusion in checklicenses.py
to cover some .py files in the jsoncpp source that do
not contain a license.

BUG=472809

Review URL: https://codereview.chromium.org/1054753002

Cr-Commit-Position: refs/heads/master@{#324061}