Reviewed by Adam Barth.

        XMLDocumentParser needs to implement DocumentParser::detach()
        https://bugs.webkit.org/show_bug.cgi?id=44533

        Added a test which uses an image as an SVG font (decoding errors galore).

        XML versions of one of the tests from
        http://trac.webkit.org/changeset/65692

        * fast/css/font-face-svg-decoding-error.html: Added.
        * fast/frames/resources/set-src-to-javascript-url.xhtml: Added.
        * fast/frames/set-parent-src-synchronously.xhtml: Added.
2010-08-24  Eric Seidel  <eric@webkit.org>

        Reviewed by Adam Barth.

        XMLDocumentParser needs to implement DocumentParser::detach()
        https://bugs.webkit.org/show_bug.cgi?id=44533

        Test: fast/frames/set-parent-src-synchronously.xhtml

        In the example from the page we were accessing document()
        after DocumentParser::detach() was called.  To prevent this
        I added an ASSERT(m_document) to document(), causing many
        test cases to cover the bug shown in bug 44533.

        To fix the bug, I implemented XMLDocumentParser::detach()
        and had it call clearCurrentNodeStack(), thus making
        it impossible for XMLDocumentParser to still have the Document
        on the node stack after detach (which was what was causing this bug).

        While fixing this, I noticed that XMLDocumentParser may have the
        same trouble crashing that the HTMLDocumentParser did when
        synchronously deleted from JS (for example by an iframe navigation).
        I added a test case to cover this and protected the parser after
        the two places it executes scripts.

        * dom/DocumentParser.h:
        (WebCore::DocumentParser::document):
        (WebCore::DocumentParser::isDetached):
        * dom/RawDataDocumentParser.h:
        (WebCore::RawDataDocumentParser::finish):
        * dom/XMLDocumentParser.cpp:
        (WebCore::XMLDocumentParser::append):
        (WebCore::XMLDocumentParser::detach):
        (WebCore::XMLDocumentParser::notifyFinished):
        * dom/XMLDocumentParser.h:
        * dom/XMLDocumentParserLibxml2.cpp:
        (WebCore::XMLDocumentParser::doWrite):
        (WebCore::XMLDocumentParser::endElementNs):
        (WebCore::XMLDocumentParser::resumeParsing):
        * html/HTMLDocumentParser.cpp:
        (WebCore::HTMLDocumentParser::pumpTokenizer):
        (WebCore::HTMLDocumentParser::willPumpLexer):
        (WebCore::HTMLDocumentParser::didPumpLexer):
        (WebCore::HTMLDocumentParser::end):
        (WebCore::HTMLDocumentParser::endIfDelayed):
        (WebCore::HTMLDocumentParser::script):
        * html/HTMLViewSourceParser.cpp:
        (WebCore::HTMLViewSourceParser::updateTokenizerState):
        * html/HTMLViewSourceParser.h:
        (WebCore::HTMLViewSourceParser::document):
        * loader/ImageDocument.cpp:
        (WebCore::ImageDocumentParser::document):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@65958 268f45cc-cd09-0410-ab3c-d52691b4dbfc