Add sebsg and mathp to Autofill Watchlist

Review-Url: https://codereview.chromium.org/2445073002
Cr-Commit-Position: refs/heads/master@{#427164}

WATCHLISTS

@@ -1480,7 +1480,9 @@
     'autofill': ['estade+watch@chromium.org',
                  'jdonnelly+autofillwatch@chromium.org',
                  'rouslan+autofill@chromium.org',
-                 'vabr+watchlistautofill@chromium.org'],
+                 'vabr+watchlistautofill@chromium.org',
+                 'mathp+autofillwatch@chromium.org',
+                 'sebsg+autofillwatch@chromium.org'],
     'automation': ['robertshield@chromium.org'],
     'background_sync': ['chasej+watch@chromium.org',
                         'iclelland+watch@chromium.org',
@@ -1937,7 +1939,8 @@
                'jianli@chromium.org'],
     'password_manager': ['gcasto+watchlist@chromium.org',
                          'vabr+watchlistpasswordmanager@chromium.org'],
-    'payments': ['rouslan+payments@chromium.org'],
+    'payments': ['rouslan+payments@chromium.org',
+                 'sebsg+paymentswatch@chromium.org'],
     'pepper_api': ['binji+watch@chromium.org',
                    'bradnelson+warch@chromium.org',
                    'ihf+watch@chromium.org',