Use a monotonic clock (TimeTicks) to report network times to WebCore.

net/url_request/url_request.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_URL_REQUEST_URL_REQUEST_H_
 #define NET_URL_REQUEST_URL_REQUEST_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/debug/leak_tracker.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
+#include "base/time.h"
 #include "base/threading/non_thread_safe.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/auth.h"
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_export.h"
 #include "net/base/net_log.h"
 #include "net/base/network_delegate.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_request_headers.h"
@@ skipping 15 matching lines @@
 // Temporary layering violation to allow existing users of a deprecated
 // interface.
 namespace appcache {
 class AppCacheInterceptor;
 class AppCacheRequestHandlerTest;
 class AppCacheURLRequestJobTest;
 }
 
 namespace base {
 class Time;
+class TimeTicks;
 }  // namespace base

[wtc, 2011/12/10 01:02:54]

If you include "base/time.h", please remove the forward
declarations of Time and TimeTicks.

[James Simonsen, 2011/12/12 23:35:34]

Done.

Yeah, I saw that right after I uploaded the patch and decided it wasn't worth
uploading another one just to fix that. Oh well.

 
 // Temporary layering violation to allow existing users of a deprecated
 // interface.
 namespace fileapi {
 class FileSystemDirURLRequestJobTest;
 class FileSystemOperationWriteTest;
 class FileSystemURLRequestJobTest;
 class FileWriterDelegateTest;
 }
 
@@ skipping 385 matching lines @@
   // separated by commas (per RFC 2616). This will not work with cookies since
   // comma can be used in cookie values.
   // TODO(darin): add API to enumerate response headers.
   void GetResponseHeaderById(int header_id, std::string* value);
   void GetResponseHeaderByName(const std::string& name, std::string* value);
 
   // Get all response headers, \n-delimited and \n\0-terminated.  This includes
   // the response status line.  Restrictions on GetResponseHeaders apply.
   void GetAllResponseHeaders(std::string* headers);
 
+  // The time when |this| was constructed.
+  base::TimeTicks creation_time() const { return creation_time_; }
+
   // The time at which the returned response was requested.  For cached
   // responses, this is the last time the cache entry was validated.
   const base::Time& request_time() const {
     return response_info_.request_time;
   }
 
   // The time at which the returned response was generated.  For cached
   // responses, this is the last time the cache entry was validated.
   const base::Time& response_time() const {
     return response_info_.response_time;
@@ skipping 338 matching lines @@
   // TODO(battre): Remove this. http://crbug.com/89049
   bool has_notified_completion_;
 
   // Authentication data used by the NetworkDelegate for this request,
   // if one is present. |auth_credentials_| may be filled in when calling
   // |NotifyAuthRequired| on the NetworkDelegate. |auth_info_| holds
   // the authentication challenge being handled by |NotifyAuthRequired|.
   AuthCredentials auth_credentials_;
   scoped_refptr<AuthChallengeInfo> auth_info_;
 
+  base::TimeTicks creation_time_;
+
   DISALLOW_COPY_AND_ASSIGN(URLRequest);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_H_