Where did the headlines come from?

Question

Google

I watched the http request with the Live HTTP Headers extension and saw strange headers in the request to the local server. Actually, what are the headers and where did they come from? (All other extensions are disabled)
Instead of a private set, numbers, letters, signs.
GET / HTTP/1.1
Host: localhost
Accept-Encoding: gzip, deflate, sdch
Accept-Language: uk,ru;q=0.8,en;q=0.6
Cookie: _ga=private; OGPC=private; SID=private; HSID=private; SSID=private; SAPISID=private; NID=private;
DNT: 1
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36
X-Client-Data : private
Campaign Live HTTP Headers works wonders!

Answer 1

Live HTTP Headers muddy the waters!