Add link preload as=document support

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

 /*
  * Copyright (C) 2003, 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 219 matching lines @@
     // https://mikewest.github.io/cors-rfc1918/#external-request
     bool isExternalRequest() const { return m_isExternalRequest; }
     void setExternalRequestStateFromRequestorAddressSpace(WebAddressSpace);
 
     InputToLoadPerfMetricReportPolicy inputPerfMetricReportPolicy() const { return m_inputPerfMetricReportPolicy; }
     void setInputPerfMetricReportPolicy(InputToLoadPerfMetricReportPolicy inputPerfMetricReportPolicy) { m_inputPerfMetricReportPolicy = inputPerfMetricReportPolicy; }
 
     void setRedirectStatus(RedirectStatus status) { m_redirectStatus = status; }
     RedirectStatus redirectStatus() const { return m_redirectStatus; }
 
+    void setLinkPreload(bool isLinkPreload) { m_isLinkPreload = isLinkPreload; }
+    bool linkPreload() const { return m_isLinkPreload; }
+
 private:
     void initialize(const KURL&);
 
     const CacheControlHeader& cacheControlHeader() const;
 
     KURL m_url;
     WebCachePolicy m_cachePolicy;
     double m_timeoutInterval; // 0 is a magic value for platform default on platforms that have one.
     KURL m_firstPartyForCookies;
     RefPtr<SecurityOrigin> m_requestorOrigin;
     AtomicString m_httpMethod;
     HTTPHeaderMap m_httpHeaderFields;
     RefPtr<EncodedFormData> m_httpBody;
     RefPtr<EncodedFormData> m_attachedCredential;
     bool m_allowStoredCredentials : 1;
     bool m_reportUploadProgress : 1;
     bool m_reportRawHeaders : 1;
     bool m_hasUserGesture : 1;
     bool m_downloadToFile : 1;
     bool m_useStreamOnResponse : 1;
     bool m_shouldResetAppCache : 1;
+    bool m_isLinkPreload : 1;
     WebURLRequest::SkipServiceWorker m_skipServiceWorker;
     ResourceLoadPriority m_priority;
     int m_intraPriorityValue;
     int m_requestorID;
     int m_requestorProcessID;
     int m_appCacheHostID;
     RefPtr<ExtraData> m_extraData;
     WebURLRequest::RequestContext m_requestContext;
     WebURLRequest::FrameType m_frameType;
     WebURLRequest::FetchRequestMode m_fetchRequestMode;
@@ skipping 29 matching lines @@
     std::unique_ptr<CrossThreadHTTPHeaderMapData> m_httpHeaders;
     RefPtr<EncodedFormData> m_httpBody;
     RefPtr<EncodedFormData> m_attachedCredential;
     bool m_allowStoredCredentials;
     bool m_reportUploadProgress;
     bool m_hasUserGesture;
     bool m_downloadToFile;
     WebURLRequest::SkipServiceWorker m_skipServiceWorker;
     bool m_useStreamOnResponse;
     bool m_shouldResetAppCache;
+    bool m_isLinkPreload;
     ResourceLoadPriority m_priority;
     int m_intraPriorityValue;
     int m_requestorID;
     int m_requestorProcessID;
     int m_appCacheHostID;
     WebURLRequest::RequestContext m_requestContext;
     WebURLRequest::FrameType m_frameType;
     WebURLRequest::FetchRequestMode m_fetchRequestMode;
     WebURLRequest::FetchCredentialsMode m_fetchCredentialsMode;
     WebURLRequest::FetchRedirectMode m_fetchRedirectMode;
     WebURLRequest::LoFiState m_loFiState;
     ReferrerPolicy m_referrerPolicy;
     bool m_didSetHTTPReferrer;
     bool m_checkForBrowserSideNavigation;
     double m_uiStartTime;
     bool m_isExternalRequest;
     InputToLoadPerfMetricReportPolicy m_inputPerfMetricReportPolicy;
     ResourceRequest::RedirectStatus m_redirectStatus;
 };
 
 } // namespace blink
 
 #endif // ResourceRequest_h