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

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1131 matching lines @@
         'browser/net/net_pref_observer.cc',
         'browser/net/net_pref_observer.h',
         'browser/net/network_stats.cc',
         'browser/net/network_stats.h',
         'browser/net/network_time_tracker.cc',
         'browser/net/network_time_tracker.h',
         'browser/net/preconnect.cc',
         'browser/net/preconnect.h',
         'browser/net/predictor.cc',
         'browser/net/predictor.h',
+        'browser/net/predictor_tab_helper.cc',
+        'browser/net/predictor_tab_helper.h',
         'browser/net/pref_proxy_config_tracker.cc',
         'browser/net/pref_proxy_config_tracker.h',
         'browser/net/pref_proxy_config_tracker_impl.cc',
         'browser/net/pref_proxy_config_tracker_impl.h',
         'browser/net/probe_message.cc',
         'browser/net/probe_message.h',
         'browser/net/proxy_service_factory.cc',
         'browser/net/proxy_service_factory.h',
         'browser/net/referrer.cc',
         'browser/net/referrer.h',
@@ skipping 2276 matching lines @@
             'package_name': 'org/chromium/chrome/browser/ui/toolbar',
             'template_deps': ['browser/ui/toolbar/toolbar_model_security_level_list.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }