Add chromeos watchlist

WATCHLISTS

Index: WATCHLISTS
diff --git a/WATCHLISTS b/WATCHLISTS
index 51a9e5f041f9a26a451e776888aa81b02c5b7b63..576979454428d9751968be8d33982e4de9195b75 100644
--- a/WATCHLISTS
+++ b/WATCHLISTS
@@ -125,6 +125,9 @@
       'filepath': 'chrome/browser/views/options/content_page_view.h|'\
         'chrome/browser/views/options/general_page_view.h',
     },
+    'chromeos': {
+      'filepath': 'chrome/browser/chromeos/.*',
+    },
   },
 
   'WATCHLISTS': {
@@ -172,5 +175,6 @@
     'gpu': ['apatrick@chromium.org'],
     'locale_settings': ['finnur+watch@chromium.org'],
     'options_dialog_content': ['finnur+watch@chromium.org'],
+    'chromeos': ['davemoore+watch@chromium.org'],
   },
 }