Remove blink::Resource::Type::LinkPrefetch and replace it by a flag

third_party/WebKit/Source/core/fetch/FetchRequest.h

Index: third_party/WebKit/Source/core/fetch/FetchRequest.h
diff --git a/third_party/WebKit/Source/core/fetch/FetchRequest.h b/third_party/WebKit/Source/core/fetch/FetchRequest.h
index fda9bdf1ab6ed323684a8ac1739183281ef556fb..b2a3b6509016eeafcbd9b0c07968ea35d6ab710f 100644
--- a/third_party/WebKit/Source/core/fetch/FetchRequest.h
+++ b/third_party/WebKit/Source/core/fetch/FetchRequest.h
@@ -87,6 +87,9 @@ public:
     bool isLinkPreload() { return m_linkPreload; }
     void setLinkPreload(bool isLinkPreload) { m_linkPreload = isLinkPreload; }
 
+    bool isPrefetch() const { return m_isPrefetch; }
+    void setIsPrefetch(bool isPrefetch) { m_isPrefetch = isPrefetch; }
+
     void setContentSecurityCheck(ContentSecurityPolicyDisposition contentSecurityPolicyOption) { m_options.contentSecurityPolicyOption = contentSecurityPolicyOption; }
     void setCrossOriginAccessControl(SecurityOrigin*, CrossOriginAttributeValue);
     OriginRestriction getOriginRestriction() const { return m_originRestriction; }
@@ -105,6 +108,7 @@ private:
     ResourceLoaderOptions m_options;
     bool m_forPreload;
     bool m_linkPreload;
+    bool m_isPrefetch;
     double m_preloadDiscoveryTime;
     DeferOption m_defer;
     OriginRestriction m_originRestriction;