Move parsing of referrer policy header values to SecurityPolicy

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

Index: third_party/WebKit/Source/core/dom/ExecutionContext.cpp
diff --git a/third_party/WebKit/Source/core/dom/ExecutionContext.cpp b/third_party/WebKit/Source/core/dom/ExecutionContext.cpp
index 60a65d4167ebcc6bf180365b6f94d7729ee9ce0e..149cd19ff7be676ed587f3f375502f10e036290a 100644
--- a/third_party/WebKit/Source/core/dom/ExecutionContext.cpp
+++ b/third_party/WebKit/Source/core/dom/ExecutionContext.cpp
@@ -193,22 +193,13 @@ String ExecutionContext::outgoingReferrer() const {
 
 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 ((supportLegacyKeywords
-             ? SecurityPolicy::referrerPolicyFromStringWithLegacyKeywords(
-                   token, &currentResult)
-             : SecurityPolicy::referrerPolicyFromString(token,
-                                                        &currentResult))) {
-      referrerPolicy = currentResult;
-    }
-  }
+  ReferrerPolicy referrerPolicy;
 
-  if (referrerPolicy == ReferrerPolicyDefault) {
+  if (!SecurityPolicy::referrerPolicyFromHeaderValue(
+          policies,
+          supportLegacyKeywords ? SupportReferrerPolicyLegacyKeywords
+                                : DoNotSupportReferrerPolicyLegacyKeywords,
+          &referrerPolicy)) {
     addConsoleMessage(ConsoleMessage::create(
         RenderingMessageSource, ErrorMessageLevel,
         "Failed to set referrer policy: The value '" + policies +