Document that philipj/fs review <track>, WebVTT, etc.

NOTRY=true

Review URL: https://codereview.chromium.org/648483004

git-svn-id: svn://svn.chromium.org/blink/trunk@183543 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/OWNERS

@@ -39,6 +39,7 @@ ojan@chromium.org
 # pdr reviews many svg and text autosizing patches.
 pdr@chromium.org
 pfeldman@chromium.org
+# philipj reviews <video>, <track>, WebVTT and Fullscreen.
 philipj@opera.com
 pkasting@chromium.org
 rbyers@chromium.org

third_party/WebKit/Source/core/html/track/OWNERS

+fs@opera.com
+philipj@opera.com