Propagate the remote socket address to URLRequest and to ViewHostMsg_FrameNavigate.

chrome/common/render_messages_params.h

Index: chrome/common/render_messages_params.h
diff --git a/chrome/common/render_messages_params.h b/chrome/common/render_messages_params.h
index 5ce030eb13e2dc0fd1601ac8d35637a5b19e397c..d536d0cc3459913279856e7ea06963e9fd748311 100644
--- a/chrome/common/render_messages_params.h
+++ b/chrome/common/render_messages_params.h
@@ -303,6 +303,10 @@ struct ViewHostMsg_FrameNavigate_Params {
 
   // The status code of the HTTP request.
   int http_status_code;
+
+  // Remote address of the socket which fetched this resource.
+  // Can be "ipv4:port", "[ipv6]:port", or empty.
+  std::string socket_address;
 };
 
 // Values that may be OR'd together to form the 'flags' parameter of a