data compression proxy

[asmadeus08]

Google's data compression server needs authentication.Authentication string should be provided in google_api_keys.cc

Code:

 std::string GetSpdyProxyAuthValue() {
   return "ac4500dd3b7579186c1b0620614fdb1f7d61f944";
   /*
#if defined(SPDY_PROXY_AUTH_VALUE)
   return SPDY_PROXY_AUTH_VALUE;
#else
   return std::string();
#endif
  */
 }

And the returned version should be correct Chromium version in data_reduction_proxy_request_options.cc

Code:

std::string DataReductionProxyRequestOptions::ChromiumVersion() const {
 return "44.0.2403.157";
 /*
#if defined(PRODUCT_VERSION)
 return PRODUCT_VERSION;
#else
 return std::string();
#endif
 */
}

Can i do it by myself on SlimJet or on Vivaldi qand where is i can find that file and how to compile code? Please can you explain?