Reviewed by Oliver.
        
        - http://bugs.webkit.org/show_bug.cgi?id=16587
        Implement the most useful part of the W3C Selectors API.

        * WebCore.xcodeproj/project.pbxproj:
        * css/CSSStyleSelector.h: Make Node a friend of CSSStyleSelector so it can use checkSelector()
        * dom/ChildNodeList.cpp:
        (WebCore::ChildNodeList::ChildNodeList): Change to being a DynamicNodeList
        * dom/ChildNodeList.h:
        * dom/ClassNodeList.cpp:
        (WebCore::ClassNodeList::ClassNodeList): Change to being a DynamicNodeList
        * dom/ClassNodeList.h:
        * dom/Document.idl: Add the new functions
        * dom/DynamicNodeList.cpp: Copied from WebCore/dom/NodeList.cpp.
        (WebCore::DynamicNodeList::DynamicNodeList): Rename NodeList to DynamicNodeList, to differentiate it from the new StaticNodeList
        (WebCore::DynamicNodeList::~DynamicNodeList):
        (WebCore::DynamicNodeList::recursiveLength):
        (WebCore::DynamicNodeList::itemForwardsFromCurrent):
        (WebCore::DynamicNodeList::itemBackwardsFromCurrent):
        (WebCore::DynamicNodeList::recursiveItem):
        (WebCore::DynamicNodeList::itemWithName):
        (WebCore::DynamicNodeList::rootNodeChildrenChanged):
        (WebCore::DynamicNodeList::Caches::Caches):
        (WebCore::DynamicNodeList::Caches::reset):
        * dom/DynamicNodeList.h: Copied from WebCore/dom/NodeList.h.
        (WebCore::DynamicNodeList::rootNodeAttributeChanged):
        * dom/Element.idl: Add the new functions
        * dom/NameNodeList.cpp: Change to being a DynamicNodeList
        (WebCore::NameNodeList::NameNodeList):
        * dom/NameNodeList.h:
        (WebCore::NameNodeList::rootNodeAttributeChanged):
        * dom/Node.cpp:
        (WebCore::TagNodeList::TagNodeList): Change to being a DynamicNodeList
        (WebCore::Node::registerDynamicNodeList):
        (WebCore::Node::unregisterDynamicNodeList):
        (WebCore::Node::getElementsByName):
        (WebCore::Node::getElementsByClassName):
        (WebCore::Node::querySelector): new
        (WebCore::Node::querySelectorAll): new
        * dom/Node.h:
        * dom/NodeList.cpp: Removed.
        * dom/NodeList.h: This is now an abstract superclass of DynamicNodeList and StaticNodeList
        (WebCore::NodeList::NodeList):
        (WebCore::NodeList::~NodeList):
        * dom/SelectorNodeList.cpp: Added.
        (WebCore::SelectorNodeList::SelectorNodeList): New StaticNodeList subclass that filters elements by CSS selector
        * dom/SelectorNodeList.h: Added.
        * dom/StaticNodeList.cpp: Added.
        (WebCore::StaticNodeList::length):
        (WebCore::StaticNodeList::item):
        (WebCore::StaticNodeList::itemWithName):
        * dom/StaticNodeList.h: Added.
        (WebCore::StaticNodeList::StaticNodeList):
        (WebCore::StaticNodeList::~StaticNodeList):

LayoutTests:

        Reviewed by Oliver.
        
        - http://bugs.webkit.org/show_bug.cgi?id=16587
        Implement the most useful part of the W3C Selectors API.

        * fast/dom/SelectorAPI: Copied from LayoutTests/fast/dom/getElementsByClassName.
        * fast/dom/SelectorAPI/dumpNodeList-expected.txt:
        * fast/dom/SelectorAPI/dumpNodeList.html: Modified to test querySelector and querySelectorAll instead of getElementsByClassName
        * fast/dom/Window/window-properties-expected.txt: Added querySelector and querySelectorAll



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@28981 268f45cc-cd09-0410-ab3c-d52691b4dbfc