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diff --git a/Source/WebCore/html/PluginDocument.cpp b/Source/WebCore/html/PluginDocument.cpp
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+/*
+ * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "PluginDocument.h"
+
+#include "DocumentLoader.h"
+#include "Frame.h"
+#include "FrameLoaderClient.h"
+#include "FrameView.h"
+#include "HTMLEmbedElement.h"
+#include "HTMLHtmlElement.h"
+#include "HTMLNames.h"
+#include "MainResourceLoader.h"
+#include "NodeList.h"
+#include "Page.h"
+#include "RawDataDocumentParser.h"
+#include "RenderEmbeddedObject.h"
+#include "Settings.h"
+
+namespace WebCore {
+    
+using namespace HTMLNames;
+
+// FIXME: Share more code with MediaDocumentParser.
+class PluginDocumentParser : public RawDataDocumentParser {
+public:
+    static PassRefPtr<PluginDocumentParser> create(PluginDocument* document)
+    {
+        return adoptRef(new PluginDocumentParser(document));
+    }
+
+private:
+    PluginDocumentParser(Document* document)
+        : RawDataDocumentParser(document)
+        , m_embedElement(0)
+    {
+    }
+
+    virtual void appendBytes(DocumentWriter*, const char*, int, bool);
+
+    void createDocumentStructure();
+
+    HTMLEmbedElement* m_embedElement;
+};
+
+void PluginDocumentParser::createDocumentStructure()
+{
+    ExceptionCode ec;
+    RefPtr<Element> rootElement = document()->createElement(htmlTag, false);
+    document()->appendChild(rootElement, ec);
+#if ENABLE(OFFLINE_WEB_APPLICATIONS)
+    static_cast<HTMLHtmlElement*>(rootElement.get())->insertedByParser();
+#endif
+
+    if (document()->frame() && document()->frame()->loader())
+        document()->frame()->loader()->dispatchDocumentElementAvailable();
+
+    RefPtr<Element> body = document()->createElement(bodyTag, false);
+    body->setAttribute(marginwidthAttr, "0");
+    body->setAttribute(marginheightAttr, "0");
+    body->setAttribute(bgcolorAttr, "rgb(38,38,38)");
+
+    rootElement->appendChild(body, ec);
+        
+    RefPtr<Element> embedElement = document()->createElement(embedTag, false);
+        
+    m_embedElement = static_cast<HTMLEmbedElement*>(embedElement.get());
+    m_embedElement->setAttribute(widthAttr, "100%");
+    m_embedElement->setAttribute(heightAttr, "100%");
+    
+    m_embedElement->setAttribute(nameAttr, "plugin");
+    m_embedElement->setAttribute(srcAttr, document()->url().string());
+    m_embedElement->setAttribute(typeAttr, document()->loader()->writer()->mimeType());
+
+    static_cast<PluginDocument*>(document())->setPluginNode(m_embedElement);
+
+    body->appendChild(embedElement, ec);    
+}
+
+void PluginDocumentParser::appendBytes(DocumentWriter*, const char*, int, bool)
+{
+    ASSERT(!m_embedElement);
+    if (m_embedElement)
+        return;
+
+    createDocumentStructure();
+
+    Frame* frame = document()->frame();
+    if (!frame)
+        return;
+    Settings* settings = frame->settings();
+    if (!settings || !frame->loader()->subframeLoader()->allowPlugins(NotAboutToInstantiatePlugin))
+        return;
+
+    document()->updateLayout();
+
+    // Below we assume that renderer->widget() to have been created by
+    // document()->updateLayout(). However, in some cases, updateLayout() will 
+    // recurse too many times and delay its post-layout tasks (such as creating
+    // the widget). Here we kick off the pending post-layout tasks so that we
+    // can synchronously redirect data to the plugin.
+    frame->view()->flushAnyPendingPostLayoutTasks();
+
+    if (RenderPart* renderer = m_embedElement->renderPart()) {
+        if (Widget* widget = renderer->widget()) {
+            frame->loader()->client()->redirectDataToPlugin(widget);
+            // In a plugin document, the main resource is the plugin. If we have a null widget, that means
+            // the loading of the plugin was cancelled, which gives us a null mainResourceLoader(), so we
+            // need to have this call in a null check of the widget or of mainResourceLoader().
+            frame->loader()->activeDocumentLoader()->mainResourceLoader()->setShouldBufferData(false);
+        }
+    }
+
+    finish();
+}
+
+PluginDocument::PluginDocument(Frame* frame, const KURL& url)
+    : HTMLDocument(frame, url)
+    , m_shouldLoadPluginManually(true)
+{
+    setCompatibilityMode(QuirksMode);
+    lockCompatibilityMode();
+}
+
+PassRefPtr<DocumentParser> PluginDocument::createParser()
+{
+    return PluginDocumentParser::create(this);
+}
+
+Widget* PluginDocument::pluginWidget()
+{
+    if (m_pluginNode && m_pluginNode->renderer()) {
+        ASSERT(m_pluginNode->renderer()->isEmbeddedObject());
+        return toRenderEmbeddedObject(m_pluginNode->renderer())->widget();
+    }
+    return 0;
+}
+
+Node* PluginDocument::pluginNode()
+{
+    return m_pluginNode.get();
+}
+
+void PluginDocument::detach()
+{
+    // Release the plugin node so that we don't have a circular reference.
+    m_pluginNode = 0;
+    HTMLDocument::detach();
+}
+
+void PluginDocument::cancelManualPluginLoad()
+{
+    // PluginDocument::cancelManualPluginLoad should only be called once, but there are issues
+    // with how many times we call beforeload on object elements. <rdar://problem/8441094>.
+    if (!shouldLoadPluginManually())
+        return;
+
+    frame()->loader()->activeDocumentLoader()->mainResourceLoader()->cancel();
+    setShouldLoadPluginManually(false);
+}
+
+}