Use C++11 features in core/html

Source/core/html/HTMLPlugInElement.cpp

 /**
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
  *
  * 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 281 matching lines @@
 
 void HTMLPlugInElement::resetInstance()
 {
     m_pluginWrapper.clear();
 }
 
 SharedPersistent<v8::Object>* HTMLPlugInElement::pluginWrapper()
 {
     LocalFrame* frame = document().frame();
     if (!frame)
-        return 0;
+        return nullptr;
 
     // If the host dynamically turns off JavaScript (or Java) we will still
     // return the cached allocated Bindings::Instance. Not supporting this
     // edge-case is OK.
     if (!m_pluginWrapper) {
         Widget* plugin;
 
         if (m_persistedPluginWidget)
             plugin = m_persistedPluginWidget.get();
         else
             plugin = pluginWidget();
 
         if (plugin)
             m_pluginWrapper = frame->script().createPluginWrapper(plugin);
     }
     return m_pluginWrapper.get();
 }
 
 Widget* HTMLPlugInElement::pluginWidget() const
 {
     if (RenderPart* renderPart = renderPartForJSBindings())
         return renderPart->widget();
-    return 0;
+    return nullptr;
 }
 
 bool HTMLPlugInElement::isPresentationAttribute(const QualifiedName& name) const
 {
     if (name == widthAttr || name == heightAttr || name == vspaceAttr || name == hspaceAttr || name == alignAttr)
         return true;
     return HTMLFrameOwnerElement::isPresentationAttribute(name);
 }
 
 void HTMLPlugInElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
@@ skipping 98 matching lines @@
     }
 
     return Image::supportsType(m_serviceType);
 }
 
 RenderEmbeddedObject* HTMLPlugInElement::renderEmbeddedObject() const
 {
     // HTMLObjectElement and HTMLEmbedElement may return arbitrary renderers
     // when using fallback content.
     if (!renderer() || !renderer()->isEmbeddedObject())
-        return 0;
+        return nullptr;
     return toRenderEmbeddedObject(renderer());
 }
 
 // We don't use m_url, as it may not be the final URL that the object loads,
 // depending on <param> values.
 bool HTMLPlugInElement::allowedToLoadFrameURL(const String& url)
 {
     KURL completeURL = document().completeURL(url);
     if (contentFrame() && protocolIsJavaScript(completeURL)
         && !document().securityOrigin()->canAccess(contentDocument()->securityOrigin()))
@@ skipping 191 matching lines @@
     return hasAuthorShadowRoot();
 }
 
 void HTMLPlugInElement::lazyReattachIfNeeded()
 {
     if (!useFallbackContent() && !usePlaceholderContent() && needsWidgetUpdate() && renderer() && !isImageType())
         lazyReattachIfAttached();
 }
 
 }