PlzNavigate: identify same-page browser-initiated navigation.

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 292 matching lines @@
       InputToLoadPerfMetricReportPolicy inputPerfMetricReportPolicy) {
     m_inputPerfMetricReportPolicy = inputPerfMetricReportPolicy;
   }
 
   void setRedirectStatus(RedirectStatus status) { m_redirectStatus = status; }
   RedirectStatus redirectStatus() const { return m_redirectStatus; }
 
   void setNavigationStartTime(double);
   double navigationStartTime() const { return m_navigationStart; }
 
+  void setIsSameDocumentNavigation(bool isSameDocument) {
+    m_isSameDocumentNavigation = isSameDocument;
+  }
+  bool isSameDocumentNavigation() const { return m_isSameDocumentNavigation; }
+
  private:
   const CacheControlHeader& cacheControlHeader() const;
 
   bool needsHTTPOrigin() 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;
@@ skipping 20 matching lines @@
   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;
+  bool m_isSameDocumentNavigation;
   InputToLoadPerfMetricReportPolicy m_inputPerfMetricReportPolicy;
 
   mutable CacheControlHeader m_cacheControlHeaderCache;
 
   static double s_defaultTimeoutInterval;
 
   RedirectStatus m_redirectStatus;
 
   double m_navigationStart = 0;
 };
@@ skipping 38 matching lines @@
   bool m_checkForBrowserSideNavigation;
   double m_uiStartTime;
   bool m_isExternalRequest;
   InputToLoadPerfMetricReportPolicy m_inputPerfMetricReportPolicy;
   ResourceRequest::RedirectStatus m_redirectStatus;
 };
 
 }  // namespace blink
 
 #endif  // ResourceRequest_h