Apply meta tag referrer policy for preloaded requests

Source/core/html/parser/HTMLPreloadScannerTest.cpp

Index: Source/core/html/parser/HTMLPreloadScannerTest.cpp
diff --git a/Source/core/html/parser/HTMLPreloadScannerTest.cpp b/Source/core/html/parser/HTMLPreloadScannerTest.cpp
index 0d2021b2f8f2221b93e30b099798e773acf2453e..7d23cabd7435f93a45bc62aa2ca62fc468926b35 100644
--- a/Source/core/html/parser/HTMLPreloadScannerTest.cpp
+++ b/Source/core/html/parser/HTMLPreloadScannerTest.cpp
@@ -62,6 +62,11 @@ public:
         }
     }
 
+    void preloadReferrerPolicy(const String& policy) override
+    {
+        return;
+    }
+
 protected:
     void preload(PassOwnPtr<PreloadRequest> preloadRequest) override
     {