Add self to compositor watchlist

BUG=None
TEST=None


Review URL: http://codereview.chromium.org/8351011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@107016 0039d316-1c4b-4281-b951-d872f2087c98

WATCHLISTS

@@ -401,7 +401,8 @@
     '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'],