Add field trial stats for alternate_protocol.

chrome/browser/renderer_host/resource_dispatcher_host.cc

 // Copyright (c) 2010 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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #include "chrome/browser/renderer_host/resource_dispatcher_host.h"
 
 #include <vector>
 
@@ skipping 146 matching lines @@
   response->response_head.response_time = request->response_time();
   response->response_head.headers = request->response_headers();
   request->GetCharset(&response->response_head.charset);
   response->response_head.replace_extension_localization_templates =
       replace_extension_localization_templates;
   response->response_head.content_length = request->GetExpectedContentSize();
   request->GetMimeType(&response->response_head.mime_type);
   response->response_head.was_fetched_via_spdy =
       request->was_fetched_via_spdy();
   response->response_head.was_npn_negotiated = request->was_npn_negotiated();
+  response->response_head.was_alternate_protocol_available =
+      request->was_alternate_protocol_available();
   response->response_head.was_fetched_via_proxy =
       request->was_fetched_via_proxy();
   appcache::AppCacheInterceptor::GetExtraResponseInfo(
       request,
       &response->response_head.appcache_id,
       &response->response_head.appcache_manifest_url);
 }
 
 // Returns a list of all the possible error codes from the network module.
 // Note that the error codes are all positive (since histograms expect positive
@@ skipping 1635 matching lines @@
     // them.
     case ResourceType::IMAGE:
       return net::LOWEST;
 
     default:
       // When new resource types are added, their priority must be considered.
       NOTREACHED();
       return net::LOW;
   }
 }