Stop supporting legacy keywords in Referrer-Policy header

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

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2012 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 218 matching lines @@
 {
     String unusedErrorMessage;
     return isSecureContext(unusedErrorMessage, privilegeContextCheck);
 }
 
 String ExecutionContext::outgoingReferrer() const
 {
     return url().strippedForUseAsReferrer();
 }
 
-void ExecutionContext::parseAndSetReferrerPolicy(const String& policies)
+void ExecutionContext::parseAndSetReferrerPolicy(const String& policies, bool supportLegacyKeywords)
 {
     ReferrerPolicy referrerPolicy = ReferrerPolicyDefault;
 
     Vector<String> tokens;
     policies.split(',', true, tokens);
     for (const auto& token : tokens) {
         ReferrerPolicy currentResult;
-        if (SecurityPolicy::referrerPolicyFromString(token, &currentResult)) {
+        if ((supportLegacyKeywords ? SecurityPolicy::referrerPolicyFromStringWithLegacyKeywords(token, &currentResult) : SecurityPolicy::referrerPolicyFromString(token, &currentResult))) {
             referrerPolicy = currentResult;
         }
     }
 
     if (referrerPolicy == ReferrerPolicyDefault) {
-        addConsoleMessage(ConsoleMessage::create(RenderingMessageSource, ErrorMessageLevel, "Failed to set referrer policy: The value '" + policies + "' is not one of 'always', 'default', 'never', 'no-referrer', 'no-referrer-when-downgrade', 'origin', 'origin-when-crossorigin', or 'unsafe-url'. The referrer policy has been left unchanged."));
+        addConsoleMessage(ConsoleMessage::create(RenderingMessageSource, ErrorMessageLevel, "Failed to set referrer policy: The value '" + policies + "' is not one of " + (supportLegacyKeywords ? "'always', 'default', 'never', 'origin-when-crossorigin', " : "") + "'no-referrer', 'no-referrer-when-downgrade', 'origin', 'origin-when-cross-origin', or 'unsafe-url'. The referrer policy has been left unchanged."));
         return;
     }
 
     setReferrerPolicy(referrerPolicy);
 }
 
 void ExecutionContext::setReferrerPolicy(ReferrerPolicy referrerPolicy)
 {
     // When a referrer policy has already been set, the latest value takes precedence.
     UseCounter::count(this, UseCounter::SetReferrerPolicy);
@@ skipping 10 matching lines @@
 
 DEFINE_TRACE(ExecutionContext)
 {
     visitor->trace(m_publicURLManager);
     visitor->trace(m_pendingExceptions);
     ContextLifecycleNotifier::trace(visitor);
     Supplementable<ExecutionContext>::trace(visitor);
 }
 
 } // namespace blink