chrome window instead of with the content window. And the window sizes were coming from the
hidden window instead of the parent window the url originated from.
r=travis
a=jevering
remove CanHandleConent. I don't think we need this. Also remove notion of getting a parent
content handler. This doesn't make sense anymore for how I'm defining a content handler.
Added progid prefix for content handler.
mscott%netscape.com
dmose%mozilla.org