Remove the unmaintained performance monitor.

chrome/chrome_tests.gypi

 # Copyright 2013 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.
 {
   'includes': [
     'js_unittest_vars.gypi',
   ],
   'targets': [
     {
       'target_name': 'interactive_ui_tests',
@@ skipping 1303 matching lines @@
         'browser/net/ftp_browsertest.cc',
         'browser/net/load_timing_browsertest.cc',
         'browser/net/nss_context_chromeos_browsertest.cc',
         'browser/net/predictor_browsertest.cc',
         'browser/net/proxy_browsertest.cc',
         'browser/net/sdch_browsertest.cc',
         'browser/net/websocket_browsertest.cc',
         'browser/notifications/login_state_notification_blocker_chromeos_browsertest.cc',
         'browser/notifications/message_center_notifications_browsertest.cc',
         'browser/password_manager/password_manager_browsertest.cc',
-        'browser/performance_monitor/performance_monitor_browsertest.cc',
         'browser/plugins/npapi_infobar_browsertest.cc',
         'browser/policy/cloud/cloud_policy_browsertest.cc',
         'browser/policy/cloud/cloud_policy_manager_browsertest.cc',
         'browser/policy/cloud/component_cloud_policy_browsertest.cc',
         'browser/policy/cloud/device_management_service_browsertest.cc',
         'browser/policy/cloud/test_request_interceptor.cc',
         'browser/policy/cloud/test_request_interceptor.h',
         'browser/policy/policy_browsertest.cc',
         'browser/policy/policy_prefs_browsertest.cc',
         'browser/plugins/npapi_infobar_browsertest.cc',
@@ skipping 1713 matching lines @@
             ['enable_webrtc==1', {
               'dependencies': [
                 '../third_party/libjingle/libjingle.gyp:libjingle_webrtc'
               ]
             }],
           ],
         }]
     }],
   ],  # 'conditions'
 }