GitLab

The code is dead and we have no plan to implement RTP recording in the near term.
So removing to avoid confusion.

BUG=

Review URL: https://codereview.chromium.org/129533003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243876 0039d316-1c4b-4281-b951-d872f2087c98