Replace static_casts with to* functions.
https://bugs.webkit.org/show_bug.cgi?id=112072

Reviewed by Philip Rogers.

to* functions are preferred over static_cast calls since they
help to catch bad casts easily on the testing infrastructure.

Source/WebCore:

* accessibility/AccessibilityMenuList.cpp:
(WebCore::AccessibilityMenuList::canSetFocusAttribute):
* bindings/objc/DOM.mm:
(kitClass):
* bindings/v8/V8LazyEventListener.cpp:
(WebCore::V8LazyEventListener::prepareListenerObject):
* css/SelectorChecker.cpp:
(WebCore::SelectorChecker::checkOne):
* editing/ApplyStyleCommand.cpp:
(WebCore::isLegacyAppleStyleSpan):
(WebCore::isEmptyFontTag):
(WebCore::ApplyStyleCommand::applyBlockStyle):
* editing/FormatBlockCommand.cpp:
(WebCore::isElementForFormatBlock):
* editing/ReplaceSelectionCommand.cpp:
(WebCore::isMailPasteAsQuotationNode):
(WebCore::haveSameTagName):
(WebCore::ReplaceSelectionCommand::removeRedundantStylesAndKeepStyleSpanInline):
(WebCore::ReplaceSelectionCommand::makeInsertedContentRoundTrippableWithHTMLTreeBuilder):
* history/CachedPage.cpp:
(WebCore::CachedPage::restore):
* html/ColorInputType.cpp:
(WebCore::ColorInputType::suggestions):
* html/HTMLTableRowsCollection.cpp:
(WebCore::isInHead):
(WebCore::isInBody):
(WebCore::isInFoot):
* inspector/DOMPatchSupport.cpp:
(WebCore::DOMPatchSupport::innerPatchNode):
* page/PageSerializer.cpp:
(WebCore::SerializerMarkupAccumulator::appendCustomAttributes):
* plugins/PluginView.cpp:
(WebCore::PluginView::getValue):
* rendering/RenderEmbeddedObject.cpp:
(WebCore::RenderEmbeddedObject::paintContents):
(WebCore::RenderEmbeddedObject::handleUnavailablePluginIndicatorEvent):
* rendering/RenderLayer.cpp:
(WebCore::RenderLayer::name):
* rendering/RenderMedia.cpp:
(WebCore::RenderMedia::mediaElement):
* rendering/RenderSearchField.cpp:
(WebCore::RenderSearchField::autosaveName):
* rendering/RenderTextControl.cpp:
(WebCore::RenderTextControl::textFormControlElement):
(WebCore::updateUserModifyProperty):
* rendering/mathml/RenderMathMLFenced.cpp:
(WebCore::RenderMathMLFenced::updateFromElement):
* rendering/mathml/RenderMathMLFraction.cpp:
(WebCore::RenderMathMLFraction::updateFromElement):
* xml/parser/XMLDocumentParserLibxml2.cpp:
(WebCore::XMLDocumentParser::XMLDocumentParser):
(WebCore::XMLDocumentParser::endElementNs):

Source/WebKit/chromium:

* src/ChromeClientImpl.cpp:
(WebKit::ChromeClientImpl::focusedNodeChanged):
* src/ContextMenuClientImpl.cpp:
(WebKit::ContextMenuClientImpl::getCustomMenuFromDefaultItems):
* src/DOMUtilitiesPrivate.cpp:
(WebCore::toHTMLElement):
* src/WebSearchableFormData.cpp:
(HTMLNames::IsSelectInDefaultState):

Source/WebKit/mac:

* WebView/WebView.mm:
(-[WebView _enterFullscreenForNode:WebCore::]):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145462 268f45cc-cd09-0410-ab3c-d52691b4dbfc