In chrome:loadtimes show the NPN protocol negotiated

webkit/glue/resource_loader_bridge.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // The intent of this file is to provide a type-neutral abstraction between
 // Chrome and WebKit for resource loading. This pure-virtual interface is
 // implemented by the embedder.
 //
 // One of these objects will be created by WebKit for each request. WebKit
 // will own the pointer to the bridge, and will delete it when the request is
@@ skipping 168 matching lines @@
   // contain a portion of the response body at the time that the ResponseInfo
   // becomes available.
   FilePath download_file_path;
 
   // True if the response was delivered using SPDY.
   bool was_fetched_via_spdy;
 
   // True if the response was delivered after NPN is negotiated.
   bool was_npn_negotiated;
 
+  // Protocol negotiated with server.
+  std::string npn_negotiated_protocol;
+
   // True if response could use alternate protocol. However, browser will
   // ignore the alternate protocol when spdy is not enabled on browser side.
   bool was_alternate_protocol_available;
 
   // True if the response was fetched via an explicit proxy (as opposed to a
   // transparent proxy). The proxy could be any type of proxy, HTTP or SOCKS.
   // Note: we cannot tell if a transparent proxy may have been involved.
   bool was_fetched_via_proxy;
 
   // Remote address of the socket which fetched this resource.
@@ skipping 204 matching lines @@
   // methods may be called to construct the body of the request.
   WEBKIT_GLUE_EXPORT ResourceLoaderBridge();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ResourceLoaderBridge);
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_RESOURCE_LOADER_BRIDGE_H_