All URL strings passed in to the WebKit API need to be passed to
        MarshallingHelpers::BSTRToKURL so that they may be properly parsed.

        Reviewed by Alexey Proskuryakov.

        * MarshallingHelpers.cpp:
        (MarshallingHelpers::BSTRToKURL): Changed to use the two-argument
        constructor for KURL so that the strings will be parsed rather than
        assumed to be in the correct encoding/form.

        * WebResource.cpp:
        (WebResource::initWithData):
        * WebURLResponse.cpp:
        (WebURLResponse::initWithURL):
        * WebView.cpp:
        (WebView::userAgentForURL):
        (WebView::copyURL):
        Changed to use MarshallingHelpers::BSTRToKURL instead of trying to do
        the work manually.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@40248 268f45cc-cd09-0410-ab3c-d52691b4dbfc