Reviewed by Adam Barth.

        Make DocumentWriter a member of DocumentLoader
        instead of FrameLoader.
        https://bugs.webkit.org/show_bug.cgi?id=50489

        Refactor, no new tests.

        * bindings/ScriptControllerBase.cpp:
        (WebCore::ScriptController::executeIfJavaScriptURL):
        * dom/Document.cpp:
        (WebCore::Document::Document):
        (WebCore::Document::explicitClose):
        (WebCore::Document::lastModified):
        (WebCore::Document::initSecurityContext):
        (WebCore::Document::updateURLForPushOrReplaceState):
        * dom/Document.h:
        (WebCore::Document::setDocumentLoader):
        (WebCore::Document::loader):
        * html/MediaDocument.cpp:
        (WebCore::MediaDocument::replaceMediaElementTimerFired):
        * html/PluginDocument.cpp:
        (WebCore::PluginDocumentParser::createDocumentStructure):
        * loader/DocumentLoader.cpp:
        (WebCore::DocumentLoader::DocumentLoader):
        (WebCore::DocumentLoader::finishedLoading):
        (WebCore::DocumentLoader::commitData):
        (WebCore::DocumentLoader::setupForReplaceByMIMEType):
        (WebCore::DocumentLoader::setFrame):
        * loader/DocumentLoader.h:
        (WebCore::DocumentLoader::writer):
        * loader/DocumentWriter.cpp:
        (WebCore::DocumentWriter::begin):
        * loader/DocumentWriter.h:
        (WebCore::DocumentWriter::setFrame):
        * loader/FrameLoader.cpp:
        (WebCore::FrameLoader::FrameLoader):
        (WebCore::FrameLoader::init):
        (WebCore::FrameLoader::clear):
        (WebCore::FrameLoader::receivedFirstData):
        (WebCore::FrameLoader::transitionToCommitted):
        (WebCore::FrameLoader::open):
        (WebCore::FrameLoader::finishedLoadingDocument):
        (WebCore::FrameLoader::addExtraFieldsToRequest):
        * loader/FrameLoader.h:
        (WebCore::FrameLoader::notifier):
        * svg/graphics/SVGImage.cpp:
        (WebCore::SVGImage::dataChanged):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@78342 268f45cc-cd09-0410-ab3c-d52691b4dbfc