Update net/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

net/http/proxy_client_socket.cc

Index: net/http/proxy_client_socket.cc
diff --git a/net/http/proxy_client_socket.cc b/net/http/proxy_client_socket.cc
index b89247970c176f875a77ab8aab73dedbc994c857..4caab0876823dd8636bf61f6c6df43b1c8101900 100644
--- a/net/http/proxy_client_socket.cc
+++ b/net/http/proxy_client_socket.cc
@@ -46,7 +46,7 @@ void ProxyClientSocket::BuildTunnelRequest(
 int ProxyClientSocket::HandleProxyAuthChallenge(HttpAuthController* auth,
                                                 HttpResponseInfo* response,
                                                 const BoundNetLog& net_log) {
-  DCHECK(response->headers);
+  DCHECK(response->headers.get());
   int rv = auth->HandleAuthChallenge(response->headers, false, true, net_log);
   response->auth_challenge = auth->auth_info();
   if (rv == OK)
@@ -74,7 +74,7 @@ void ProxyClientSocket::LogBlockedTunnelResponse(int http_status_code,
 // static
 bool ProxyClientSocket::SanitizeProxyRedirect(HttpResponseInfo* response,
                                               const GURL& url) {
-  DCHECK(response && response->headers);
+  DCHECK(response && response->headers.get());
 
   std::string location;
   if (!response->headers->IsRedirect(&location))