Use Document::validBaseElementURL to init preloadscanner

third_party/WebKit/Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 2915 matching lines @@
     const KURL& newURL = url.isEmpty() ? blankURL() : url;
     if (newURL == m_url)
         return;
 
     m_url = newURL;
     m_accessEntryFromURL = nullptr;
     updateBaseURL();
     contextFeatures().urlDidChange(this);
 }
 
+KURL Document::validBaseElementURL() const
+{
+    if (m_baseElementURL.isValid())
+        return m_baseElementURL;
+
+    return KURL();
+}
+
 void Document::updateBaseURL()
 {
     KURL oldBaseURL = m_baseURL;
     // DOM 3 Core: When the Document supports the feature "HTML" [DOM Level 2 HTML], the base URI is computed using
     // first the value of the href attribute of the HTML BASE element if any, and the value of the documentURI attribute
     // from the Document interface otherwise (which we store, preparsed, in m_url).
     if (!m_baseElementURL.isEmpty())
         m_baseURL = m_baseElementURL;
     else if (!m_baseURLOverride.isEmpty())
         m_baseURL = m_baseURLOverride;
@@ skipping 3064 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     Document::WeakDocumentSet& set = Document::liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().getString().utf8().data());
 }
 #endif