[Not for review] record detailed time breakdown of SW related requests.

third_party/WebKit/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 322 matching lines @@
 
   const Vector<String>& corsExposedHeaderNames() const {
     return m_corsExposedHeaderNames;
   }
   void setCorsExposedHeaderNames(const Vector<String>& headerNames) {
     m_corsExposedHeaderNames = headerNames;
   }
 
   int64_t responseTime() const { return m_responseTime; }
   void setResponseTime(int64_t responseTime) { m_responseTime = responseTime; }
+  int64_t responseStart() const { return m_responseStart; }
+  void setResponseStart(int64_t responseStart) {
+    m_responseStart = responseStart;
+  }
 
   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; }
 
   long long encodedDataLength() const { return m_encodedDataLength; }
@@ skipping 125 matching lines @@
   // the ServiceWorker. Null if the response isn't from the CacheStorage.
   String m_cacheStorageCacheName;
 
   // The headers that should be exposed according to CORS. Only guaranteed
   // to be set if the response was fetched by a ServiceWorker.
   Vector<String> m_corsExposedHeaderNames;
 
   // The time at which the response headers were received.  For cached
   // responses, this time could be "far" in the past.
   int64_t m_responseTime;
+  int64_t m_responseStart;
 
   // 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;
 
   // Size of the response in bytes prior to decompression.
   long long m_encodedDataLength;
 
@@ skipping 56 matching lines @@
   bool m_wasNpnNegotiated;
   bool m_wasAlternateProtocolAvailable;
   bool m_wasFetchedViaProxy;
   bool m_wasFetchedViaServiceWorker;
   bool m_wasFetchedViaForeignFetch;
   bool m_wasFallbackRequiredByServiceWorker;
   WebServiceWorkerResponseType m_serviceWorkerResponseType;
   Vector<KURL> m_urlListViaServiceWorker;
   String m_cacheStorageCacheName;
   int64_t m_responseTime;
+  int64_t m_responseStart;
   String m_remoteIPAddress;
   unsigned short m_remotePort;
   long long m_encodedDataLength;
   long long m_encodedBodyLength;
   long long m_decodedBodyLength;
   String m_downloadedFilePath;
   RefPtr<BlobDataHandle> m_downloadedFileHandle;
 };
 
 }  // namespace blink
 
 #endif  // ResourceResponse_h