Add rtoy to watchlist for audio changes

R=rtoy@chromium.org,kbr@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/55223006

git-svn-id: svn://svn.chromium.org/blink/trunk@161328 bbb929c8-8fbe-4397-9dbb-9b2b20218538
<animate> not working on SVG Polygons.

The animation is taking place, but the rendering side didn't use the
computed values.

R=
BUG=196435

Review URL: https://codereview.chromium.org/55893002

git-svn-id: svn://svn.chromium.org/blink/trunk@161329 bbb929c8-8fbe-4397-9dbb-9b2b20218538