Remove layoutObject() dependency from HTMLPlugInElement::layoutObjectIsFocusable().

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 242 matching lines @@
     // a LayoutEmbeddedObject or LayoutPart.
     if (useFallbackContent())
         return LayoutObject::createObject(this, style);
 
     if (isImageType()) {
         LayoutImage* image = new LayoutImage(this);
         image->setImageResource(LayoutImageResource::create());
         return image;
     }
 
-
+    m_pluginIsAvailable = true;
     return new LayoutEmbeddedObject(this);
 }
 
 void HTMLPlugInElement::finishParsingChildren()
 {
     HTMLFrameOwnerElement::finishParsingChildren();
     if (useFallbackContent())
         return;
 
     setNeedsWidgetUpdate(true);
@@ skipping 116 matching lines @@
     return true;
 }
 
 bool HTMLPlugInElement::layoutObjectIsFocusable() const
 {
     if (HTMLFrameOwnerElement::supportsFocus() && HTMLFrameOwnerElement::layoutObjectIsFocusable())
         return true;
 
     if (useFallbackContent() || !HTMLFrameOwnerElement::layoutObjectIsFocusable())
         return false;
-    return layoutObject() && layoutObject()->isEmbeddedObject() && !layoutEmbeddedItem().showsUnavailablePluginIndicator();
+    return m_pluginIsAvailable;
 }
 
 bool HTMLPlugInElement::isImageType()
 {
     if (m_serviceType.isEmpty() && protocolIs(m_url, "data"))
         m_serviceType = mimeTypeFromDataURL(m_url);
 
     if (LocalFrame* frame = document().frame()) {
         KURL completedURL = document().completeURL(m_url);
         return frame->loader().client()->getObjectContentType(completedURL, m_serviceType, shouldPreferPlugInsForImages()) == ObjectContentImage;
@@ skipping 75 matching lines @@
     VLOG(1) << "Loaded URL: " << url.getString();
     m_loadedUrl = url;
 
     if (m_persistedPluginWidget) {
         setWidget(m_persistedPluginWidget.release());
     } else {
         bool loadManually = document().isPluginDocument() && !document().containsPlugins();
         FrameLoaderClient::DetachedPluginPolicy policy = requireLayoutObject ? FrameLoaderClient::FailOnDetachedPlugin : FrameLoaderClient::AllowDetachedPlugin;
         Widget* widget = frame->loader().client()->createPlugin(this, url, paramNames, paramValues, mimeType, loadManually, policy);
         if (!widget) {
-            if (!layoutItem.isNull() && !layoutItem.showsUnavailablePluginIndicator())
+            if (!layoutItem.isNull() && !layoutItem.showsUnavailablePluginIndicator()) {
+                m_pluginIsAvailable = false;
                 layoutItem.setPluginUnavailabilityReason(LayoutEmbeddedObject::PluginMissing);
+            }
             return false;
         }
 
         if (!layoutItem.isNull())
             setWidget(widget);
         else
             setPersistedPluginWidget(widget);
     }
 
     document().setContainsPlugins();
@@ skipping 40 matching lines @@
     if (!document().getSecurityOrigin()->canDisplay(url)) {
         FrameLoader::reportLocalLoadFailed(frame, url.getString());
         return false;
     }
 
     AtomicString declaredMimeType = document().isPluginDocument() && document().localOwner() ?
         document().localOwner()->fastGetAttribute(HTMLNames::typeAttr) :
         fastGetAttribute(HTMLNames::typeAttr);
     if (!document().contentSecurityPolicy()->allowObjectFromSource(url)
         || !document().contentSecurityPolicy()->allowPluginTypeForDocument(document(), mimeType, declaredMimeType, url)) {
-        if (LayoutEmbeddedItem layoutItem = layoutEmbeddedItem())
+        if (LayoutEmbeddedItem layoutItem = layoutEmbeddedItem()) {
+            m_pluginIsAvailable = false;
             layoutItem.setPluginUnavailabilityReason(LayoutEmbeddedObject::PluginBlockedByContentSecurityPolicy);
+        }
         return false;
     }
     // If the URL is empty, a plugin could still be instantiated if a MIME-type
     // is specified.
     return (!mimeType.isEmpty() && url.isEmpty()) || !MixedContentChecker::shouldBlockFetch(frame, WebURLRequest::RequestContextObject, WebURLRequest::FrameTypeNone, ResourceRequest::RedirectStatus::NoRedirect, url);
 }
 
 bool HTMLPlugInElement::allowedToLoadPlugin(const KURL& url, const String& mimeType)
 {
     if (document().isSandboxed(SandboxPlugins)) {
@@ skipping 21 matching lines @@
 
 void HTMLPlugInElement::lazyReattachIfNeeded()
 {
     if (!useFallbackContent() && needsWidgetUpdate() && layoutObject() && !isImageType()) {
         lazyReattachIfAttached();
         setPersistedPluginWidget(nullptr);
     }
 }
 
 } // namespace blink