Add metrics for calculating precision/recall of link navigation pre-connect triggers.

chrome/browser/net/preconnect.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/net/preconnect.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 71 matching lines @@
 
   // Translate the motivation from UrlRequest motivations to HttpRequest
   // motivations.
   switch (motivation) {
     case UrlInfo::OMNIBOX_MOTIVATED:
       request_info.motivation = net::HttpRequestInfo::OMNIBOX_MOTIVATED;
       break;
     case UrlInfo::LEARNED_REFERAL_MOTIVATED:
       request_info.motivation = net::HttpRequestInfo::PRECONNECT_MOTIVATED;
       break;
+    case UrlInfo::MOUSE_OVER_MOTIVATED:
     case UrlInfo::SELF_REFERAL_MOTIVATED:
     case UrlInfo::EARLY_LOAD_MOTIVATED:
       request_info.motivation = net::HttpRequestInfo::EARLY_LOAD_MOTIVATED;
       break;
     default:
       // Other motivations should never happen here.
       NOTREACHED();
       break;
   }
 
   // Setup the SSL Configuration.
   net::SSLConfig ssl_config;
   session->ssl_config_service()->GetSSLConfig(&ssl_config);
   if (session->http_stream_factory()->has_next_protos())
     ssl_config.next_protos = session->http_stream_factory()->next_protos();
 
   // All preconnects should perform EV certificate verification.
   ssl_config.verify_ev_cert = true;
 
   net::HttpStreamFactory* http_stream_factory = session->http_stream_factory();
   http_stream_factory->PreconnectStreams(count, request_info, priority,
                                          ssl_config, ssl_config);
 }
 
 }  // namespace chrome_browser_net