add self to compositor watchlist

WATCHLISTS

 # Copyright (c) 2011 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
 
 
 {
   'WATCHLIST_DEFINITIONS': {
@@ skipping 383 matching lines @@
                       'ctguil+watch@chromium.org',
                       'aboxhall+watch@chromium.org',
                       'davidbarr+watch@chromium.org',
                       'zork+watch@chromium.org',
                       'hashimoto+watch@chromium.org',
                       'yoshiki+watch@chromium.org',
                       'yuzo+watch@chromium.org'],
     'aura': ['ben+watch@chromium.org', 'sadrul@chromium.org'],
     'views_core': ['ben+watch@chromium.org'],
     'tools_emacs': ['fischman+watch@chromium.org'],
-    'browser_compositor': ['backer@chromium.org', 'vollick@chromium.org'],
+    'browser_compositor': ['backer@chromium.org', 'vollick@chromium.org',
+                           'piman+watch@chromium.org'],
     'textinput': ['suzhe@chromium.org'],
     'omnibox': ['suzhe@chromium.org'],
     'message_loop': ['sadrul@chromium.org'],
   },
 }