Add ReferrerPolicy support to preload

third_party/WebKit/Source/platform/network/LinkHeader.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef LinkHeader_h
 #define LinkHeader_h
 
 #include "platform/PlatformExport.h"
 #include "wtf/Allocator.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class LinkHeader {
   DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
 
  public:
   const String& url() const { return m_url; }
   const String& rel() const { return m_rel; }
   const String& as() const { return m_as; }
   const String& mimeType() const { return m_mimeType; }
   const String& media() const { return m_media; }
   const String& crossOrigin() const { return m_crossOrigin; }
+  const String& referrerPolicy() const { return m_referrerPolicy; }
   bool valid() const { return m_isValid; }
 
   enum LinkParameterName {
     LinkParameterRel,
     LinkParameterAnchor,
     LinkParameterTitle,
     LinkParameterMedia,
     LinkParameterType,
     LinkParameterRev,
     LinkParameterHreflang,
     // Beyond this point, only link-extension parameters
     LinkParameterUnknown,
     LinkParameterCrossOrigin,
     LinkParameterAs,
+    LinkParameterReferrerPolicy,
   };
 
  private:
   friend class LinkHeaderSet;
 
   template <typename Iterator>
   LinkHeader(Iterator begin, Iterator end);
   void setValue(LinkParameterName, const String& value);
 
   String m_url;
   String m_rel;
   String m_as;
   String m_mimeType;
   String m_media;
   String m_crossOrigin;
+  String m_referrerPolicy;
   bool m_isValid;
 };
 
 class PLATFORM_EXPORT LinkHeaderSet {
   STACK_ALLOCATED();
 
  public:
   LinkHeaderSet(const String& header);
 
   Vector<LinkHeader>::const_iterator begin() const {
     return m_headerSet.begin();
   }
   Vector<LinkHeader>::const_iterator end() const { return m_headerSet.end(); }
   LinkHeader& operator[](size_t i) { return m_headerSet[i]; }
   size_t size() { return m_headerSet.size(); }
 
  private:
   Vector<LinkHeader> m_headerSet;
 };
 
 }  // namespace blink
 
 #endif