Referrer Policy: Update <meta name="referrer"> values to match the spec.

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 3144 matching lines @@
 {
     if (frame() && frame()->isMainFrame()) {
         frameHost()->chrome().dispatchViewportPropertiesDidChange(m_viewportDescription);
     }
 }
 
 void Document::processReferrerPolicy(const String& policy)
 {
     ASSERT(!policy.isNull());
 
-    if (equalIgnoringCase(policy, "never")) {
+    if (equalIgnoringCase(policy, "no-referrer") || equalIgnoringCase(policy, "never")) {
         setReferrerPolicy(ReferrerPolicyNever);
-    } else if (equalIgnoringCase(policy, "always")) {
+    } else if (equalIgnoringCase(policy, "unsafe-url") || equalIgnoringCase(policy, "always")) {
         setReferrerPolicy(ReferrerPolicyAlways);
     } else if (equalIgnoringCase(policy, "origin")) {
         setReferrerPolicy(ReferrerPolicyOrigin);
-    } else if (equalIgnoringCase(policy, "default")) {
+    } else if (equalIgnoringCase(policy, "no-referrer-when-downgrade") || equalIgnoringCase(policy, "default")) {
         setReferrerPolicy(ReferrerPolicyDefault);
     } else {
-        addConsoleMessage(ConsoleMessage::create(RenderingMessageSource, ErrorMessageLevel, "Failed to set referrer policy: The value '" + policy + "' is not one of 'always', 'default', 'never', or 'origin'. Defaulting to 'never'."));
+        addConsoleMessage(ConsoleMessage::create(RenderingMessageSource, ErrorMessageLevel, "Failed to set referrer policy: The value '" + policy + "' is not one of 'no-referrer', 'origin', 'no-referrer-when-downgrade', or 'unsafe-url'. Defaulting to 'no-referrer'."));
         setReferrerPolicy(ReferrerPolicyNever);
     }
 }
 
 void Document::setReferrerPolicy(ReferrerPolicy referrerPolicy)
 {
     // FIXME: Can we adopt the CSP referrer policy merge algorithm? Or does the web rely on being able to modify the referrer policy in-flight?
     if (m_didSetReferrerPolicy)
         UseCounter::count(this, UseCounter::ResetReferrerPolicy);
     m_didSetReferrerPolicy = true;
@@ skipping 2669 matching lines @@
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (WeakDocumentSet::const_iterator it = set.begin(); it != set.end(); ++it) {
         fprintf(stderr, "- Document %p URL: %s\n", *it, (*it)->url().string().utf8().data());
     }
 }
 #endif