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

chrome/renderer/security_filter_peer.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 CHROME_RENDERER_SECURITY_FILTER_PEER_H_
 #define CHROME_RENDERER_SECURITY_FILTER_PEER_H_
 #pragma once
 
 #include "webkit/glue/resource_loader_bridge.h"
 
@@ skipping 15 matching lines @@
 
   static SecurityFilterPeer* CreateSecurityFilterPeerForFrame(
       webkit_glue::ResourceLoaderBridge::Peer* peer,
       int os_error);
 
   // ResourceLoaderBridge::Peer methods.
   virtual void OnUploadProgress(uint64 position, uint64 size);
   virtual bool OnReceivedRedirect(
       const GURL& new_url,
       const webkit_glue::ResourceResponseInfo& info,
+      const base::TimeTicks& start_time,
+      const base::TimeTicks& end_time,
       bool* has_new_first_party_for_cookies,
       GURL* new_first_party_for_cookies);
   virtual void OnReceivedResponse(
-      const webkit_glue::ResourceResponseInfo& info);
+      const webkit_glue::ResourceResponseInfo& info,
+      const base::TimeTicks& start_time,
+      const base::TimeTicks& end_time);
   virtual void OnDownloadedData(int len) {}
   virtual void OnReceivedData(const char* data,
                               int data_length,
                               int encoded_data_length);
   virtual void OnCompletedRequest(const net::URLRequestStatus& status,
                                   const std::string& security_info,
-                                  const base::Time& completion_time);
+                                  const base::TimeTicks& completion_time);

[jar (doing other things), 2011/11/19 03:42:32]

This might be a good place to try out that OVERRIDE keyword, and help prevent
errors.

 
  protected:
   SecurityFilterPeer(webkit_glue::ResourceLoaderBridge* resource_loader_bridge,
                      webkit_glue::ResourceLoaderBridge::Peer* peer);
 
   webkit_glue::ResourceLoaderBridge::Peer* original_peer_;
   webkit_glue::ResourceLoaderBridge* resource_loader_bridge_;
 
+  base::TimeTicks start_time_;
+  base::TimeTicks end_time_;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(SecurityFilterPeer);
 };
 
 // The BufferedPeer reads all the data of the request into an internal buffer.
 // Subclasses should implement DataReady() to process the data as necessary.
 class BufferedPeer : public SecurityFilterPeer {
  public:
   BufferedPeer(webkit_glue::ResourceLoaderBridge* resource_loader_bridge,
                webkit_glue::ResourceLoaderBridge::Peer* peer,
                const std::string& mime_type);
   virtual ~BufferedPeer();
 
   // ResourceLoaderBridge::Peer Implementation.
   virtual void OnReceivedResponse(
-      const webkit_glue::ResourceResponseInfo& info);
+      const webkit_glue::ResourceResponseInfo& info,
+      const base::TimeTicks& start_time,
+      const base::TimeTicks& end_time);
   virtual void OnReceivedData(const char* data,
                               int data_length,
                               int encoded_data_length);
   virtual void OnCompletedRequest(const net::URLRequestStatus& status,
                                   const std::string& security_info,
-                                  const base::Time& completion_time);
+                                  const base::TimeTicks& completion_time);
 
  protected:
   // Invoked when the entire request has been processed before the data is sent
   // to the original peer, giving an opportunity to subclasses to process the
   // data in data_.  If this method returns true, the data is fed to the
   // original peer, if it returns false, an error is sent instead.
   virtual bool DataReady() = 0;
 
   webkit_glue::ResourceResponseInfo response_info_;
   std::string data_;
@@ skipping 15 matching lines @@
 class ReplaceContentPeer : public SecurityFilterPeer {
  public:
   ReplaceContentPeer(webkit_glue::ResourceLoaderBridge* resource_loader_bridge,
                      webkit_glue::ResourceLoaderBridge::Peer* peer,
                      const std::string& mime_type,
                      const std::string& data);
   virtual ~ReplaceContentPeer();
 
   // ResourceLoaderBridge::Peer Implementation.
   virtual void OnReceivedResponse(
-      const webkit_glue::ResourceResponseInfo& info);
+      const webkit_glue::ResourceResponseInfo& info,
+      const base::TimeTicks& start_time,
+      const base::TimeTicks& end_time);
   virtual void OnReceivedData(const char* data,
                               int data_length,
                               int encoded_data_length);
   virtual void OnCompletedRequest(const net::URLRequestStatus& status,
                                   const std::string& security_info,
-                                  const base::Time& completion_time);
+                                  const base::TimeTicks& completion_time);
 
  private:
   webkit_glue::ResourceResponseInfo response_info_;
   std::string mime_type_;
   std::string data_;
 
   DISALLOW_COPY_AND_ASSIGN(ReplaceContentPeer);
 };
 
 #endif  // CHROME_RENDERER_SECURITY_FILTER_PEER_H_