net: Return LoadTiming information in the case of a cache hit

net/url_request/url_request_http_job.h

Index: net/url_request/url_request_http_job.h
===================================================================
--- net/url_request/url_request_http_job.h	(revision 199488)
+++ net/url_request/url_request_http_job.h	(working copy)
@@ -239,6 +239,9 @@
   // The start time for the job, ignoring re-starts.
   base::TimeTicks start_time_;
 
+  // When the transaction finished reading the request headers.
+  base::TimeTicks receive_headers_end_;
+
   scoped_ptr<HttpFilterContext> filter_context_;
   base::WeakPtrFactory<URLRequestHttpJob> weak_factory_;