Update wrapper implementations to use base types (issue #1336).

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk@1775 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
Replace NewCefRunnable* usage with base::Bind and fix CefCreateClosureTask typo (issue #1336).

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk@1776 5089003a-bbd8-11dd-ad1f-f1f9622dbc98