Reviewed by Simon Fraser.

WebCore: 

Rename the various modes to match the HTML5 specification:
    ParseMode -> CompatibilityMode
    CompatMode -> QuirksMode
    AlmostStrictMode -> LimitedQuirksMode
    StrictMode -> NoQuirksMode
            
Remove the htmlHacks() accessor from RenderStyle and make rendering code just go to the document
instead.  This makes switching modes avoid forcing all RenderStyles to detect as changed.
        
Clean up user stylesheets to minimize style recalculation when the mode is switched.
        
Fix bugs with the propagation of correct modes in the HTML5 parser.  Make sure the
dummy document created for fragment parsing properly inherits the real document's CompatibilityMode.
Make sure the tree builder properly changes the insertion mode to "BeforeHTML" after handling
a doctype token.
        
determineParseMode -> setCompatibilityModeFromDoctype, and it now implements the HTML5 algorithm
precisely.
        
* WebCore.exp.in:
* css/CSSStyleSelector.cpp:
(WebCore::CSSStyleSelector::styleForDocument):
(WebCore::CSSStyleSelector::applyProperty):
(WebCore::CSSStyleSelector::fontSizeForKeyword):
* dom/ClassNodeList.cpp:
(WebCore::ClassNodeList::ClassNodeList):
* dom/DecodedDataDocumentParser.cpp:
(WebCore::DecodedDataDocumentParser::appendBytes):
* dom/Document.cpp:
(WebCore::Document::Document):
(WebCore::Document::setCompatibilityMode):
(WebCore::Document::setDocType):
(WebCore::Document::unscheduleStyleRecalc):
(WebCore::Document::recalcStyle):
(WebCore::Document::updateStyleIfNeeded):
(WebCore::Document::createStyleSelector):
(WebCore::Document::implicitOpen):
(WebCore::Document::pageUserSheet):
(WebCore::Document::clearPageUserSheet):
(WebCore::Document::updatePageUserSheet):
(WebCore::Document::pageGroupUserSheets):
(WebCore::Document::clearPageGroupUserSheets):
(WebCore::Document::updatePageGroupUserSheets):
(WebCore::Document::findAnchor):
* dom/Document.h:
(WebCore::Document::):
(WebCore::Document::setCompatibilityModeFromDoctype):
(WebCore::Document::lockCompatibilityMode):
(WebCore::Document::compatibilityMode):
(WebCore::Document::inQuirksMode):
(WebCore::Document::inLimitedQuirksMode):
(WebCore::Document::inNoQuirksMode):
* dom/Element.cpp:
(WebCore::Element::clientWidth):
(WebCore::Element::clientHeight):
(WebCore::Element::webkitMatchesSelector):
* dom/NamedNodeMap.cpp:
(WebCore::NamedNodeMap::setClass):
* dom/Node.cpp:
(WebCore::Node::querySelector):
(WebCore::Node::querySelectorAll):
* dom/OptionElement.cpp:
(WebCore::OptionElement::collectOptionLabelOrText):
* dom/SelectorNodeList.cpp:
(WebCore::createSelectorNodeList):
* dom/StyleElement.cpp:
(WebCore::StyleElement::createSheet):
* dom/StyledElement.cpp:
(WebCore::StyledElement::createInlineStyleDecl):
(WebCore::StyledElement::parseMappedAttribute):
* editing/ReplaceSelectionCommand.cpp:
(WebCore::ReplaceSelectionCommand::shouldRemoveEndBR):
* html/HTMLBodyElement.cpp:
(WebCore::HTMLBodyElement::createLinkDecl):
* html/HTMLCanvasElement.cpp:
(WebCore::HTMLCanvasElement::getContext):
* html/HTMLConstructionSite.cpp:
(WebCore::HTMLConstructionSite::insertDoctype):
* html/HTMLDocument.cpp:
(WebCore::HTMLDocument::HTMLDocument):
(WebCore::HTMLDocument::compatMode):
(WebCore::HTMLDocument::setCompatibilityModeFromDoctype):
* html/HTMLDocument.h:
* html/HTMLLinkElement.cpp:
(WebCore::HTMLLinkElement::setCSSStyleSheet):
* html/HTMLTreeBuilder.cpp:
(WebCore::HTMLTreeBuilder::HTMLTreeBuilder):
(WebCore::HTMLTreeBuilder::FragmentParsingContext::FragmentParsingContext):
(WebCore::HTMLTreeBuilder::processDoctypeToken):
(WebCore::HTMLTreeBuilder::processStartTagForInBody):
(WebCore::HTMLTreeBuilder::defaultForInitial):
* html/HTMLViewSourceDocument.cpp:
(WebCore::HTMLViewSourceDocument::HTMLViewSourceDocument):
* loader/DocumentWriter.cpp:
(WebCore::DocumentWriter::replaceDocument):
(WebCore::DocumentWriter::reportDataReceived):
* loader/DocumentWriter.h:
* loader/ImageDocument.cpp:
(WebCore::ImageDocument::ImageDocument):
* loader/MediaDocument.cpp:
(WebCore::MediaDocument::MediaDocument):
* loader/PluginDocument.cpp:
(WebCore::PluginDocument::PluginDocument):
* loader/SinkDocument.cpp:
(WebCore::SinkDocument::SinkDocument):
* loader/TextDocument.cpp:
(WebCore::TextDocument::TextDocument):
* page/Page.cpp:
(WebCore::Page::userStyleSheetLocationChanged):
* page/PageGroup.cpp:
(WebCore::PageGroup::resetUserStyleCacheInAllFrames):
* page/Settings.cpp:
(WebCore::Settings::Settings):
(WebCore::Settings::setEnforceCSSMIMETypeInNoQuirksMode):
* page/Settings.h:
(WebCore::Settings::enforceCSSMIMETypeInNoQuirksMode):
* rendering/AutoTableLayout.cpp:
(WebCore::AutoTableLayout::recalcColumn):
* rendering/FixedTableLayout.cpp:
(WebCore::FixedTableLayout::calcPrefWidths):
* rendering/InlineFlowBox.cpp:
(WebCore::InlineFlowBox::paintBoxDecorations):
(WebCore::InlineFlowBox::paintMask):
(WebCore::InlineFlowBox::paintTextDecorations):
* rendering/InlineTextBox.cpp:
(WebCore::InlineTextBox::paint):
* rendering/RenderBlock.cpp:
(WebCore::RenderBlock::isSelfCollapsingBlock):
(WebCore::RenderBlock::collapseMargins):
(WebCore::RenderBlock::handleBottomOfBlock):
(WebCore::RenderBlock::calcInlinePrefWidths):
(WebCore::RenderBlock::calcBlockPrefWidths):
* rendering/RenderBlockLineLayout.cpp:
(WebCore::createInlineBoxForRenderer):
(WebCore::RenderBlock::findNextLineBreak):
* rendering/RenderBox.cpp:
(WebCore::RenderBox::calcPercentageHeight):
(WebCore::RenderBox::calcAbsoluteHorizontal):
(WebCore::RenderBox::calcAbsoluteHorizontalReplaced):
* rendering/RenderBox.h:
(WebCore::RenderBox::stretchesToViewHeight):
* rendering/RenderListItem.cpp:
(WebCore::getParentOfFirstLineBox):
* rendering/RenderTable.cpp:
(WebCore::RenderTable::layout):
* rendering/RenderTableSection.cpp:
(WebCore::RenderTableSection::calcRowHeight):
* rendering/RootInlineBox.cpp:
(WebCore::RootInlineBox::verticallyAlignBoxes):
* rendering/style/RenderStyle.cpp:
(WebCore::RenderStyle::diff):
* rendering/style/RenderStyle.h:
(WebCore::):
(WebCore::InheritedFlags::setBitDefaults):

WebKit/mac: 

Rename the various modes to match the HTML5 specification:
    ParseMode -> CompatibilityMode
    CompatMode -> QuirksMode
    AlmostStrictMode -> LimitedQuirksMode
    StrictMode -> NoQuirksMode
            
Remove the htmlHacks() accessor from RenderStyle and make rendering code just go to the document
instead.  This makes switching modes avoid forcing all RenderStyles to detect as changed.
        
Clean up user stylesheets to minimize style recalculation when the mode is switched.
        
Fix bugs with the propagation of correct modes in the HTML5 parser.  Make sure the
dummy document created for fragment parsing properly inherits the real document's CompatibilityMode.
Make sure the tree builder properly changes the insertion mode to "BeforeHTML" after handling
a doctype token.
        
determineParseMode -> setCompatibilityModeFromDoctype, and it now implements the HTML5 algorithm
precisely.

* WebView/WebView.mm:
(-[WebView _preferencesChangedNotification:]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@66247 268f45cc-cd09-0410-ab3c-d52691b4dbfc