Preserve original int64 time stamp in ResourceResponse.

Source/platform/network/ResourceResponse.h

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 160 matching lines @@
 
     const KURL& originalURLViaServiceWorker() const { return m_originalURLViaServiceWorker; }
     void setOriginalURLViaServiceWorker(const KURL& url) { m_originalURLViaServiceWorker = url; };
 
     bool isMultipartPayload() const { return m_isMultipartPayload; }
     void setIsMultipartPayload(bool value) { m_isMultipartPayload = value; }
 
     double responseTime() const { return m_responseTime; }
     void setResponseTime(double responseTime) { m_responseTime = responseTime; }
 
+    int64 originalResponseTime() const { return m_originalResponseTime; }
+    void setOriginalResponseTime(int64 originalResponseTime) { m_originalResponseTime = originalResponseTime; }
+
     const AtomicString& remoteIPAddress() const { return m_remoteIPAddress; }
     void setRemoteIPAddress(const AtomicString& value) { m_remoteIPAddress = value; }
 
     unsigned short remotePort() const { return m_remotePort; }
     void setRemotePort(unsigned short value) { m_remotePort = value; }
 
     const String& downloadedFilePath() const { return m_downloadedFilePath; }
     void setDownloadedFilePath(const String&);
 
     // Extra data associated with this response.
@@ skipping 84 matching lines @@
     WebServiceWorkerResponseType m_serviceWorkerResponseType;
 
     // The original URL of the response which was fetched by the ServiceWorker.
     // This may be empty if the response was created inside the ServiceWorker.
     KURL m_originalURLViaServiceWorker;
 
     // The time at which the response headers were received.  For cached
     // responses, this time could be "far" in the past.
     double m_responseTime;
 
+    // The conversion to the double value in |m_responseTime| is lossy.
+    // This preserves the original response time stamp.
+    int64 m_originalResponseTime;
+
     // Remote IP address of the socket which fetched this resource.
     AtomicString m_remoteIPAddress;
 
     // Remote port number of the socket which fetched this resource.
     unsigned short m_remotePort;
 
     // The downloaded file path if the load streamed to a file.
     String m_downloadedFilePath;
 
     // The handle to the downloaded file to ensure the underlying file will not
@@ skipping 28 matching lines @@
     bool m_isMultipartPayload;
     bool m_wasFetchedViaSPDY;
     bool m_wasNpnNegotiated;
     bool m_wasAlternateProtocolAvailable;
     bool m_wasFetchedViaProxy;
     bool m_wasFetchedViaServiceWorker;
     bool m_wasFallbackRequiredByServiceWorker;
     WebServiceWorkerResponseType m_serviceWorkerResponseType;
     KURL m_originalURLViaServiceWorker;
     double m_responseTime;
+    int64 m_originalResponseTime;
     String m_remoteIPAddress;
     unsigned short m_remotePort;
     String m_downloadedFilePath;
     RefPtr<BlobDataHandle> m_downloadedFileHandle;
 };
 
 } // namespace blink
 
 #endif // ResourceResponse_h