Add ReferrerPolicy support to preload

third_party/WebKit/Source/core/html/HTMLLinkElement.h

Index: third_party/WebKit/Source/core/html/HTMLLinkElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLLinkElement.h b/third_party/WebKit/Source/core/html/HTMLLinkElement.h
index 5883a2e018a0e91bef445e0a32bb075694233e29..ff588c48a13543d35ca75d7dcabe57b614f49933 100644
--- a/third_party/WebKit/Source/core/html/HTMLLinkElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLLinkElement.h
@@ -56,6 +56,7 @@ class CORE_EXPORT HTMLLinkElement final : public HTMLElement,
   String media() const { return m_media; }
   String typeValue() const { return m_type; }
   String asValue() const { return m_as; }
+  String referrerPolicy() const { return m_referrerPolicy; }
   const LinkRelAttribute& relAttribute() const { return m_relAttribute; }
   DOMTokenList& relList() const {
     return static_cast<DOMTokenList&>(*m_relList);
@@ -96,6 +97,7 @@ class CORE_EXPORT HTMLLinkElement final : public HTMLElement,
   bool loadLink(const String& type,
                 const String& as,
                 const String& media,
+                const String& referrerPolicy,
                 const KURL&);
   bool isAlternate() const {
     return linkStyle()->isUnset() && m_relAttribute.isAlternate();
@@ -149,6 +151,7 @@ class CORE_EXPORT HTMLLinkElement final : public HTMLElement,
   String m_type;
   String m_as;
   String m_media;
+  String m_referrerPolicy;
   Member<DOMTokenList> m_sizes;
   Vector<IntSize> m_iconSizes;
   Member<RelList> m_relList;