Apply meta tag referrer policy for preloaded requests

Source/core/html/parser/CSSPreloadScanner.h

Index: Source/core/html/parser/CSSPreloadScanner.h
diff --git a/Source/core/html/parser/CSSPreloadScanner.h b/Source/core/html/parser/CSSPreloadScanner.h
index f10004057bfc74b7b4fa8b6d333634b2a627436a..9401200a7ec5754376209e3682643c2f016a515e 100644
--- a/Source/core/html/parser/CSSPreloadScanner.h
+++ b/Source/core/html/parser/CSSPreloadScanner.h
@@ -46,6 +46,8 @@ public:
     void scan(const HTMLToken::DataVector&, const SegmentedString&, PreloadRequestStream&);
     void scan(const String&, const SegmentedString&, PreloadRequestStream&);
 
+    void setReferrerPolicy(const ReferrerPolicy&);
+
 private:
     enum State {
         Initial,
@@ -72,6 +74,8 @@ private:
 
     // Only non-zero during scan()
     PreloadRequestStream* m_requests;
+
+    ReferrerPolicy m_referrerPolicy;
 };
 
 }