Remove the RTP recording related code from webrtc-internals.
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
SVN changes up to revision 243876
Re-enable ExtensionSettingsApiTest after removing the "throttling" JS test
which is extremely slow.

BUG=248032
R=yoz@chromium.org

Review URL: https://codereview.chromium.org/129603002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243877 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243877