SameSite: Strict/Lax behavior.

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)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 717 matching lines @@
     // document.cookie.
     //
     // Q: How is the cookieURL different from the document's URL?
     // A: The two URLs are the same almost all the time.  However, if one
     //    document inherits the security context of another document, it
     //    inherits its cookieURL but not its URL.
     //
     const KURL& cookieURL() const { return m_cookieURL; }
     void setCookieURL(const KURL& url) { m_cookieURL = url; }
 
-    const KURL& firstPartyForCookies() const;
+    const KURL firstPartyForCookies() const;
 
     // The following implements the rule from HTML 4 for what valid names are.
     // To get this right for all the XML cases, we probably have to improve this or move it
     // and make it sensitive to the type of document.
     static bool isValidName(const String&);
 
     // The following breaks a qualified name into a prefix and a local name.
     // It also does a validity check, and returns false if the qualified name
     // is invalid.  It also sets ExceptionCode when name is invalid.
     static bool parseQualifiedName(const AtomicString& qualifiedName, AtomicString& prefix, AtomicString& localName, ExceptionState&);
@@ skipping 704 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