Anchor element's referrer attribute implementation for Referrer Policy

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 84b04d9fcf18517c3e277134cf1f6f9e12203036..24ecb495e9795d1cd2f697b85f063656c60bea87 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -3078,16 +3078,9 @@ void Document::processReferrerPolicy(const String& policy)
 {
     ASSERT(!policy.isNull());
 
-    if (equalIgnoringCase(policy, "no-referrer") || equalIgnoringCase(policy, "never"))
-        setReferrerPolicy(ReferrerPolicyNever);
-    else if (equalIgnoringCase(policy, "unsafe-url") || equalIgnoringCase(policy, "always"))
-        setReferrerPolicy(ReferrerPolicyAlways);
-    else if (equalIgnoringCase(policy, "origin"))
-        setReferrerPolicy(ReferrerPolicyOrigin);
-    else if (equalIgnoringCase(policy, "origin-when-cross-origin") || equalIgnoringCase(policy, "origin-when-crossorigin"))
-        setReferrerPolicy(ReferrerPolicyOriginWhenCrossOrigin);
-    else if (equalIgnoringCase(policy, "no-referrer-when-downgrade") || equalIgnoringCase(policy, "default"))
-        setReferrerPolicy(ReferrerPolicyNoReferrerWhenDowngrade);
+    ReferrerPolicy referrerPolicy;
+    if (ParseReferrerPolicy(policy, &referrerPolicy))
+        setReferrerPolicy(referrerPolicy);
     else
         addConsoleMessage(ConsoleMessage::create(RenderingMessageSource, ErrorMessageLevel, "Failed to set referrer policy: The value '" + policy + "' is not one of 'always', 'default', 'never', 'no-referrer', 'no-referrer-when-downgrade', 'origin', 'origin-when-crossorigin', or 'unsafe-url'. This document's referrer policy has been left unchanged."));
 }