Reviewed by Geoff.

       Added tests for <rdar://problem/4548537> Document.domain and other attributes are blank for an iframe created with document.write

        * http/tests/misc/iframe-domain-test-expected.txt: Added.
        * http/tests/misc/iframe-domain-test.html: Added.

WebCore:

        Reviewed by Geoff.

        Fixed <rdar://problem/4548537> Document.domain and other attributes are blank for an iframe created with document.write

        * dom/Document.cpp:
        (WebCore::Document::open):
        set the document's url to the parent's url and re-located the code that does this to occur before calling the frame's didExplicitOpen()
        * page/Frame.cpp:
        (WebCore::Frame::didExplicitOpen):
        set the frame's url to the document's url



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@16081 268f45cc-cd09-0410-ab3c-d52691b4dbfc