Update OWNERS and Histogram entries for Budget and BG Fetch

WATCHLISTS

 # 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.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 1639 matching lines @@
                         'kalyan.kondapally@intel.com',
                         'piman+watch@chromium.org'],
     'auto_bisect': ['auto-bisect-reviews@chromium.org'],
     'autofill': ['estade+watch@chromium.org',
                  'rouslan+autofill@chromium.org',
                  'vabr+watchlistautofill@chromium.org',
                  'mathp+autofillwatch@chromium.org',
                  'sebsg+autofillwatch@chromium.org',
                  'rogerm+autofillwatch@chromium.org'],
     'background_fetch': ['awdf+watch@chromium.org',
-                         'harkness+watch@chromium.org',
+                         'johnme+watch@chromium.org',
                          'peter@chromium.org'],
     'background_sync': ['chasej+watch@chromium.org',
                         'iclelland+watch@chromium.org',
                         'jkarlin+watch@chromium.org',
                         'peter@chromium.org'],
     'banners': ['dominickn+watch@chromium.org',
                 'pkotwicz+watch@chromium.org',
                 'zpeng+watch@chromium.org'],
     'base_allocator': ['dmikurube@chromium.org',
                        'wfh+watch@chromium.org'],
@@ skipping 447 matching lines @@
     'notifications': ['awdf+watch@chromium.org',
                       'mlamouri+watch-notifications@chromium.org',
                       'peter@chromium.org'],
     'nqe': ['tbansal+watch-nqe@chromium.org'],
     'ntp': ['dbeam+watch-ntp@chromium.org',
             'pedrosimonetti+watch@chromium.org'],
     'ntp_snippets': ['ntp-dev+reviews@chromium.org',
                      'noyau+watch@chromium.org'],
     'ntp_tiles': ['ntp-dev+reviews@chromium.org',
                   'noyau+watch@chromium.org'],
-    'offline_items_collection': ['harkness+watch@chromium.org',
-                                 'peter@chromium.org'],
+    'offline_items_collection': ['peter@chromium.org'],
     'offline_pages': ['chili+watch@chromium.org',
                       'dewittj+watch@chromium.org',
                       'dimich+watch@chromium.org',
                       'fgorski+watch@chromium.org',
                       'petewil+watch@chromium.org',
                       'romax+watch@chromium.org'],
     'omnibox': ['jdonnelly+watch@chromium.org'],
     'options': ['dbeam+watch-options@chromium.org',
                 'michaelpg+watch-options@chromium.org'],
     'origin_trials': ['chasej+watch@chromium.org',
@@ skipping 27 matching lines @@
                     'raymes+watch@chromium.org'],
     'plugin': ['jam@chromium.org'],
     'polymer': ['dbeam+watch-polymer@chromium.org',
                 'michaelpg+watch-polymer@chromium.org'],
     'precache': ['wifiprefetch-reviews@google.com'],
     'prepopulated_engines': ['vasilii+watch@chromium.org'],
     'prerender': ['cbentzel+watch@chromium.org',
                   'gavinp+prer@chromium.org',
                   'tburkard+watch@chromium.org'],
     'presentation': ['mfoltz+watch@chromium.org'],
-    'push_messaging': ['harkness+watch@chromium.org',
-                       'johnme+watch@chromium.org',
+    'push_messaging': ['johnme+watch@chromium.org',
                        'peter@chromium.org'],
     'reading_list': ['stkhapugin@chromium.org'],
     'remoting': ['chromoting-reviews@chromium.org'],
     'rlz_id': ['alito+watch@chromium.org',
                'gab+watch@chromium.org',
                'robertshield+watch@chromium.org'],
     'safe_browsing': ['grt+watch@chromium.org',
                       'timvolodine@chromium.org',
                       'vakh+watch@chromium.org'],
     'safe_browsing_db': ['timvolodine@chromium.org',
@@ skipping 84 matching lines @@
                          'msramek+watch@chromium.org',
                          'raymes+watch@chromium.org'],
     'windows_sandboxing': ['pennymac+watch@chromium.org',
                            'wfh+watch@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
     'zoom': ['wjmaclean@chromium.org'],
   },
 }