Move DOMSettableTokenList / DOMTokenList to dom/ folder

Move DOMSettableTokenList / DOMTokenList to from html/ to dom/ folder as they
are part of the DOM specification:
http://dom.spec.whatwg.org/#domsettabletokenlist
http://dom.spec.whatwg.org/#domtokenlist

R=arv
BUG=

Review URL: https://chromiumcodereview.appspot.com/23604030

git-svn-id: svn://svn.chromium.org/blink/trunk@157151 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: support goto line number in ctrl-p dialog

This patch adds a functionality to hit Ctrl-P and write
":<linenumber>" to go to the linenumber.

BUG=

Review URL: https://chromiumcodereview.appspot.com/23761004

git-svn-id: svn://svn.chromium.org/blink/trunk@157152 bbb929c8-8fbe-4397-9dbb-9b2b20218538