Use Referrer-Policy headers for CSS stylesheets

third_party/WebKit/Source/core/loader/resource/StyleSheetResourceClient.h

 /*
  Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
  Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
  Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  Copyright (C) 2011 Google Inc. All rights reserved.
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Library General Public
  License as published by the Free Software Foundation; either
  version 2 of the License, or (at your option) any later version.
@@ skipping 11 matching lines @@
  This class provides all functionality needed for loading images, style sheets
  and html pages from the web. It has a memory cache for these objects.
  */
 
 #ifndef StyleSheetResourceClient_h
 #define StyleSheetResourceClient_h
 
 #include "core/CoreExport.h"
 #include "platform/loader/fetch/ResourceClient.h"
 #include "platform/weborigin/KURL.h"
+#include "platform/weborigin/ReferrerPolicy.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 class CSSStyleSheetResource;
 
 class CORE_EXPORT StyleSheetResourceClient : public ResourceClient {
  public:
   static bool isExpectedType(ResourceClient* client) {
     return client->getResourceClientType() == StyleSheetType;
   }
   ResourceClientType getResourceClientType() const final {
     return StyleSheetType;
   }
   virtual void setCSSStyleSheet(const String& /* href */,
                                 const KURL& /* baseURL */,
+                                ReferrerPolicy,
                                 const String& /* charset */,
                                 const CSSStyleSheetResource*) {}
   virtual void setXSLStyleSheet(const String& /* href */,
                                 const KURL& /* baseURL */,
                                 const String& /* sheet */) {}
 
   // This gets called on the very first appendData call for the
   // CSSStyleSheetResource. Note this is not called for StyleSheetResources
   // other than CSSStyleSheetResources.
   virtual void didAppendFirstData(const CSSStyleSheetResource*) {}
 
   DEFINE_INLINE_TRACE() { ResourceClient::trace(visitor); }
 };
 
 }  // namespace blink
 
 #endif  // StyleSheetResourceClient_h