BrowserPlugin/WebView - Move plugin lifetime to DOM

Source/core/html/HTMLPlugInElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 50 matching lines @@
     bool canContainRangeEndPoint() const { return false; }
 
     bool canProcessDrag() const;
 
     virtual bool willRespondToMouseClickEvents() OVERRIDE;
 
     virtual bool isPlugInImageElement() const { return false; }
 
     virtual void removeAllEventListeners() OVERRIDE FINAL;
 
+    void createPluginWithoutRenderer(const String& mimeType);
+    // Allows persisted plugins to be registered by their creator. Call this
+    // function with an argument of 0 to clear the persisted plugin.
+    void setPlugin(PassRefPtr<Widget>);
+    PassRefPtr<Widget> plugin();

[eseidel, 2013/10/28 16:59:29]

Unless this is passing ownership, I doubt you want PassRefPtr?  I assume this is
just a getter, and you can use Widget* ?

+
 protected:
     HTMLPlugInElement(const QualifiedName& tagName, Document&);
 
     virtual void detach(const AttachContext& = AttachContext()) OVERRIDE;
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
 
     virtual bool useFallbackContent() const { return false; }
 
     virtual bool dispatchBeforeLoadEvent(const String& sourceURL) OVERRIDE;
@@ skipping 13 matching lines @@
     virtual bool rendererIsFocusable() const OVERRIDE;
 
     virtual bool isKeyboardFocusable() const OVERRIDE;
     virtual bool isPluginElement() const;
 
     mutable ScriptInstance m_instance;
     NPObject* m_NPObject;
     bool m_isCapturingMouseEvents;
     bool m_inBeforeLoadEventHandler;
     DisplayState m_displayState;
+
+    // Keep track of any plugins that wish to be persisted.
+    RefPtr<Widget> m_plugin;
+    String m_pluginMimeType;
 };
 
 inline HTMLPlugInElement* toHTMLPlugInElement(Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isPluginElement());
     return static_cast<HTMLPlugInElement*>(node);
 }
 
 inline const HTMLPlugInElement* toHTMLPlugInElement(const Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isPluginElement());
     return static_cast<const HTMLPlugInElement*>(node);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toHTMLPlugInElement(const HTMLPlugInElement*);
 
 } // namespace WebCore
 
 #endif // HTMLPlugInElement_h