Stop resource loading for WebCore::MediaDocument
Stop resource loading for WebCore::MediaDocument

BUG=17973

When a WebCore::Document is loaded, a resource request
for the document is made. In case of MediaDocument the
request for the media file is made separately through
<video> and so the DocumentLoader should be stopped.
This change mimic what is done in WebHTMLRepresentation
(which is similar to our RenderView) and stops the
resource loading in WebFrameLoaderClient since RenderView
doesn't have access to WebCore types.

Review URL: http://codereview.chromium.org/165286

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@23471 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser