GitLab

Also moved TetheringAdbFilter class declaration into a cc file, preparing for merge
with PortForwardingController::Connection.

TBR=jam (file renamed in chrome.gyp)
BUG=None

Review URL: https://chromiumcodereview.appspot.com/23490021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@220560 0039d316-1c4b-4281-b951-d872f2087c98