Adding histograms showing fraction of page load times

net/url_request/url_request_job.h

 // Copyright (c) 2012 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_JOB_H_
 #define NET_URL_REQUEST_URL_REQUEST_JOB_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 316 matching lines @@
   void RecordBytesRead(int bytes_read);
 
   // Called to query whether there is data available in the filter to be read
   // out.
   bool FilterHasData();
 
   // Subclasses may implement this method to record packet arrival times.
   // The default implementation does nothing.
   virtual void UpdatePacketReadTimes();
 
+  // Custom handler for derived classes when the request is detached.
+  virtual void OnDetachRequest() {}
+
   // Indicates that the job is done producing data, either it has completed
   // all the data or an error has been encountered. Set exclusively by
   // NotifyDone so that it is kept in sync with the request.
   bool done_;
 
   int prefilter_bytes_read_;
   int postfilter_bytes_read_;
   int64 filter_input_byte_count_;
 
   // The data stream filter which is enabled on demand.
@@ skipping 28 matching lines @@
   NetworkDelegate* network_delegate_;
 
   base::WeakPtrFactory<URLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestJob);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_JOB_H_