Specify a console message for ERR_EMPTY_RESPONSE

On an empty response from the remote server, we should log the message
"Connection closed before receiving a handshake response".

This partially fixes layout test close-before-handshake-response.html.

BUG=339373
TEST=net_unittests, http/tests/websocket

Review URL: https://codereview.chromium.org/148493009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249659 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed