Modify email address for watch to enable filtering.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/7067035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86485 0039d316-1c4b-4281-b951-d872f2087c98

WATCHLISTS

@@ -229,7 +229,7 @@
     'browser_main': ['brettw-cc@chromium.org'],
     'browser_resources': ['arv@chromium.org'],
     'chromeos_login': ['nkostylev+cc@chromium.org'],
-    'content': ['jam@chromium.org', 'joi@chromium.org'],
+    'content': ['jam@chromium.org', 'joi+watch-content@chromium.org'],
     'download': ['phajdan.jr@chromium.org','rdsmith+dwatch@chromium.org'],
     'history': ['brettw-cc@chromium.org'],
     'renderer': ['darin-cc@chromium.org',