https://bugs.webkit.org/show_bug.cgi?id=120219

Patch by Andre Moreira Magalhaes <andre.magalhaes@collabora.co.uk> on 2013-08-23
Reviewed by Eric Carlson.

Properly count bytes when handling range requests.

* http/tests/media/video-throttled-load.cgi:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@154514 268f45cc-cd09-0410-ab3c-d52691b4dbfc