Add ch.dumez to several watchlists

Add ch.dumez to the dom, device_orientation and wtf watchlists.

R=abarth, eseidel
NOTRY=true
BUG=None

Review URL: https://codereview.chromium.org/126093002

git-svn-id: svn://svn.chromium.org/blink/trunk@164594 bbb929c8-8fbe-4397-9dbb-9b2b20218538