GitLab

* Display the connection id correctly
* Display the number of packets sent, lost, and received
* Display the set of active stream ids

Review URL: https://codereview.chromium.org/293763002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271539 0039d316-1c4b-4281-b951-d872f2087c98