110     : transport_(transport), request_url_(url), method_(method) {  in Request()
112   if (!transport_)  in Request()
113     transport_ = http::Transport::CreateDefault();  in Request()
121   DCHECK(transport_) << "Request already sent";  in AddRange()
130   DCHECK(transport_) << "Request already sent";  in AddRange()
140   transport_.reset();  // Indicate that the response has been received  in GetResponseAndBlock()
148     transport_->RunCallbackAsync(  in GetResponse()
155   transport_.reset();  // Indicate that the request has been dispatched.  in GetResponse()
160   DCHECK(transport_) << "Request already sent";  in SetAccept()
169   DCHECK(transport_) << "Request already sent";  in SetContentType()
178   DCHECK(transport_) << "Request already sent";  in AddHeader()
183   DCHECK(transport_) << "Request already sent";  in AddHeaders()
225   DCHECK(transport_) << "Request already sent";  in SetReferer()
234   DCHECK(transport_) << "Request already sent";  in SetUserAgent()
243   if (transport_) {  in SendRequestIfNeeded()
274       connection_ = transport_->CreateConnection(  in SendRequestIfNeeded()