Initialize document m_URL, m_baseURL to blankURL.

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

 /*
  * 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, 2010, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 1426 matching lines @@
   Member<DocumentParser> m_parser;
   Member<ContextFeatures> m_contextFeatures;
 
   // This HashMap is used to temporaily store the ComputedStyle generated in the
   // Style Resolution phase which is used in the Layout Tree construction phase.
   HeapHashMap<Member<const Node>, RefPtr<ComputedStyle>> m_nonAttachedStyle;
 
   bool m_wellFormed;
 
   // Document URLs.
-  KURL m_url;  // Document.URL: The URL from which this document was retrieved.
-  KURL m_baseURL;  // Node.baseURI: The URL to use when resolving relative URLs.
+  KURL m_url = blankURL();  // Document.URL: The URL from which this document
+                            // was retrieved.
+  KURL m_baseURL =
+      blankURL();  // Node.baseURI: The URL to use when resolving relative URLs.
   KURL m_baseURLOverride;  // An alternative base URL that takes precedence over
                            // m_baseURL (but not m_baseElementURL).
   KURL m_baseElementURL;   // The URL set by the <base> element.
   KURL m_cookieURL;        // The URL to use for cookie access.
   std::unique_ptr<OriginAccessEntry> m_accessEntryFromURL;
 
   AtomicString m_baseTarget;
 
   // Mime-type of the document in case it was cloned or created by XHR.
   AtomicString m_mimeType;
@@ skipping 252 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif  // Document_h