WebCore:

WebCore:

        Reviewed by Hyatt.

        Fix for <rdar://problem/5464998> REGRESSION (9A543): Using Sort
        options takes you back to search screen on zappos.com

        The current mechanism for preserving form elements across removes
        did not work in the case where the input was moved by the parser to
        be out of scope of the form. This fixes that problem by having the
        parser keep track of the preserve boolean rather than the current
        form element.

        * dom/Tokenizer.h:
        (WebCore::Tokenizer::isHTMLTokenizer): New function.
        * html/HTMLFormElement.cpp:
        (WebCore::HTMLFormElement::HTMLFormElement): Get rid of
        m_preserveAcrossRemove.
        * html/HTMLFormElement.h:
        (WebCore::HTMLFormElement::isMalformed): Get rid of
        m_preserveAcrossRemove.
        * html/HTMLGenericFormElement.cpp:
        (WebCore::HTMLGenericFormElement::removedFromTree): Ask the parser
        if it is currently handling residual style rather than asking the
        form if it wants to preserveAcrossRemove.
        * html/HTMLParser.cpp:
        (WebCore::HTMLParser::HTMLParser): New boolean to initialize.
        (WebCore::HTMLParser::handleResidualStyleCloseTagAcrossBlocks): Set
        m_handlingResidualStyleAcrossBlocks to true at the beginning and
        false at the end.
        * html/HTMLParser.h:
        (WebCore::HTMLParser::isHandlingResidualStyleAcrossBlocks):
        * html/HTMLTokenizer.h:
        (WebCore::HTMLTokenizer::isHTMLTokenizer):
        (WebCore::HTMLTokenizer::htmlParser):

LayoutTests:

        Reviewed by Hyatt.

        Test for <rdar://problem/5464998> REGRESSION (9A543): Using Sort
        options takes you back to search screen on zappos.com

        * fast/forms/preserveFormDuringResidualStyle.html: Added.
        * platform/mac/fast/forms/preserveFormDuringResidualStyle-expected.checksum: Added.
        * platform/mac/fast/forms/preserveFormDuringResidualStyle-expected.png: Added.
        * platform/mac/fast/forms/preserveFormDuringResidualStyle-expected.txt: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@25521 268f45cc-cd09-0410-ab3c-d52691b4dbfc