Stop supporting legacy keywords in Referrer-Policy header

third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp

Index: third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp b/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp
index 5d6166b3d1e7e655d15cc6aa46df964a4c99c12f..ff0f8d589c21b4f8857b0054e40f732678298127 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp
+++ b/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp
@@ -298,7 +298,7 @@ private:
             }
         } else if (!m_referrerPolicySet && match(attributeName, referrerpolicyAttr) && !attributeValue.isNull()) {
             m_referrerPolicySet = true;
-            SecurityPolicy::referrerPolicyFromString(attributeValue, &m_referrerPolicy);
+            SecurityPolicy::referrerPolicyFromStringWithLegacyKeywords(attributeValue, &m_referrerPolicy);
         }
     }
 
@@ -561,7 +561,7 @@ static void handleMetaViewport(const String& attributeValue, const CachedDocumen
 static void handleMetaReferrer(const String& attributeValue, CachedDocumentParameters* documentParameters, CSSPreloadScanner* cssScanner)
 {
     ReferrerPolicy metaReferrerPolicy = ReferrerPolicyDefault;
-    if (!attributeValue.isEmpty() && !attributeValue.isNull() && SecurityPolicy::referrerPolicyFromString(attributeValue, &metaReferrerPolicy)) {
+    if (!attributeValue.isEmpty() && !attributeValue.isNull() && SecurityPolicy::referrerPolicyFromStringWithLegacyKeywords(attributeValue, &metaReferrerPolicy)) {
         documentParameters->referrerPolicy = metaReferrerPolicy;
     }
     cssScanner->setReferrerPolicy(documentParameters->referrerPolicy);