UMA metrics - number of accounts per profile and account reconciler.

components/signin.gypi

 # Copyright 2014 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': 'signin_core_common',
       'type': 'static_library',
       'include_dirs': [
@@ skipping 42 matching lines @@
         'signin/core/browser/signin_error_controller.cc',
         'signin/core/browser/signin_error_controller.h',
         'signin/core/browser/signin_internals_util.cc',
         'signin/core/browser/signin_internals_util.h',
         'signin/core/browser/signin_manager_base.cc',
         'signin/core/browser/signin_manager_base.h',
         'signin/core/browser/signin_manager.cc',
         'signin/core/browser/signin_manager.h',
         'signin/core/browser/signin_manager_cookie_helper.cc',
         'signin/core/browser/signin_manager_cookie_helper.h',
+        'signin/core/browser/signin_metrics.cc',
+        'signin/core/browser/signin_metrics.h',
         'signin/core/browser/signin_oauth_helper.cc',
         'signin/core/browser/signin_oauth_helper.h',
         'signin/core/browser/signin_tracker.cc',
         'signin/core/browser/signin_tracker.h',
         'signin/core/browser/webdata/token_service_table.cc',
         'signin/core/browser/webdata/token_service_table.h',
         'signin/core/browser/webdata/token_web_data.cc',
         'signin/core/browser/webdata/token_web_data.h',
       ],
       'conditions': [
@@ skipping 46 matching lines @@
           ],
           'sources': [
             'signin/ios/browser/profile_oauth2_token_service_ios.h',
             'signin/ios/browser/profile_oauth2_token_service_ios.mm',
           ],
         },
       ],
     }],
   ],
 }