DevTools: Fix wrong is-array-like detection when logging in console.

1) Functions should not be logged as array-like objects.
2) Log DOMTokenList as array in console, like we already do for HTMLCollection and NodeList.

BUG=350644
R=pfeldman

Review URL: https://codereview.chromium.org/197073004

git-svn-id: svn://svn.chromium.org/blink/trunk@169012 bbb929c8-8fbe-4397-9dbb-9b2b20218538