WIP: Teach "First-Party-Only" cookies about the requestor origin.

content/child/resource_dispatcher.cc

Index: content/child/resource_dispatcher.cc
diff --git a/content/child/resource_dispatcher.cc b/content/child/resource_dispatcher.cc
index b57d26c4bff547f1711fed29686b716660eddb40..80301091a2de3fd2e2309668efce7a08df29cd55 100644
--- a/content/child/resource_dispatcher.cc
+++ b/content/child/resource_dispatcher.cc
@@ -735,6 +735,7 @@ scoped_ptr<ResourceHostMsg_Request> ResourceDispatcher::CreateRequest(
   request->method = request_info.method;
   request->url = request_info.url;
   request->first_party_for_cookies = request_info.first_party_for_cookies;
+  request->requestor_origin = request_info.requestor_origin;
   request->referrer = request_info.referrer.url;
   request->referrer_policy = request_info.referrer.policy;
   request->headers = request_info.headers;