Use PluginView type rather than FrameViewBase for v8 Script object.

third_party/WebKit/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 135 matching lines @@
     // new frame and set it as the LayoutPart's FrameViewBase, causing what was
     // previously in the FrameViewBase to be torn down.
     return loadOrRedirectSubframe(completedURL, getNameAttribute(), true);
   }
 
   return loadPlugin(completedURL, mimeType, paramNames, paramValues,
                     useFallback, true);
 }
 
 bool HTMLPlugInElement::canProcessDrag() const {
-  return pluginWidget() && pluginWidget()->isPluginView() &&
-         toPluginView(pluginWidget())->canProcessDrag();
+  return pluginWidget() && pluginWidget()->canProcessDrag();
 }
 
 bool HTMLPlugInElement::canStartSelection() const {
   return useFallbackContent() && Node::canStartSelection();
 }
 
 bool HTMLPlugInElement::willRespondToMouseClickEvents() {
   if (isDisabledFormControl())
     return false;
   LayoutObject* r = layoutObject();
@@ skipping 159 matching lines @@
 
 SharedPersistent<v8::Object>* HTMLPlugInElement::pluginWrapper() {
   LocalFrame* frame = document().frame();
   if (!frame)
     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) {
-    FrameViewBase* plugin;
+    PluginView* plugin;
 
     if (m_persistedPlugin)
       plugin = m_persistedPlugin.get();
     else
       plugin = pluginWidget();
 
     if (plugin)
-      m_pluginWrapper = frame->script().createPluginWrapper(plugin);
+      m_pluginWrapper = frame->script().createPluginWrapper(*plugin);
   }
   return m_pluginWrapper.get();
 }
 
-FrameViewBase* HTMLPlugInElement::pluginWidget() const {
-  if (LayoutPart* layoutPart = layoutPartForJSBindings())
-    return layoutPart->frameViewBase();
+PluginView* HTMLPlugInElement::pluginWidget() const {
+  LayoutPart* layoutPart = layoutPartForJSBindings();
+  if (layoutPart && layoutPart->frameViewBase() &&
+      layoutPart->frameViewBase()->isPluginView())
+    return toPluginView(layoutPart->frameViewBase());
   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);
 }
@@ skipping 54 matching lines @@
   // FIXME: Check if dispatching events here is safe.
   document().updateStyleAndLayoutIgnorePendingStylesheets(
       Document::RunPostLayoutTasksSynchronously);
   return existingLayoutPart();
 }
 
 bool HTMLPlugInElement::isKeyboardFocusable() const {
   if (HTMLFrameOwnerElement::isKeyboardFocusable())
     return true;
   return document().isActive() && pluginWidget() &&
-         pluginWidget()->isPluginView() &&
-         toPluginView(pluginWidget())->supportsKeyboardFocus();
+         pluginWidget()->supportsKeyboardFocus();
 }
 
 bool HTMLPlugInElement::hasCustomFocusLogic() const {
   return !useFallbackContent();
 }
 
 bool HTMLPlugInElement::isPluginElement() const {
   return true;
 }
 
@@ skipping 219 matching lines @@
 
 void HTMLPlugInElement::lazyReattachIfNeeded() {
   if (!useFallbackContent() && needsPluginUpdate() && layoutObject() &&
       !isImageType()) {
     lazyReattachIfAttached();
     setPersistedPlugin(nullptr);
   }
 }
 
 }  // namespace blink