Add histograms for network activity, and total/cumulative

net/http/http_cache_transaction.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.
 
 // This file declares HttpCache::Transaction, a private class of HttpCache so
 // it should only be included by http_cache.cc
 
 #ifndef NET_HTTP_HTTP_CACHE_TRANSACTION_H_
 #define NET_HTTP_HTTP_CACHE_TRANSACTION_H_
 
@@ skipping 337 matching lines @@
   // Returns true if we should bother attempting to resume this request if it
   // is aborted while in progress. If |has_data| is true, the size of the stored
   // data is considered for the result.
   bool CanResume(bool has_data);
 
   // Called to signal completion of asynchronous IO.
   void OnIOComplete(int result);
 
   void ReportCacheActionStart();
   void ReportCacheActionFinish();
+  void ReportNetworkActionStart();
+  void ReportNetworkActionFinish();
   void UpdateTransactionPattern(TransactionPattern new_transaction_pattern);
   void RecordHistograms();
 
   State next_state_;
   const HttpRequestInfo* request_;
   BoundNetLog net_log_;
   scoped_ptr<HttpRequestInfo> custom_request_;
   HttpRequestHeaders request_headers_copy_;
   // If extra_headers specified a "if-modified-since" or "if-none-match",
   // |external_validation_| contains the value of those headers.
@@ skipping 34 matching lines @@
   base::TimeTicks entry_lock_waiting_since_;
   base::TimeTicks first_cache_access_since_;
   base::TimeTicks send_request_since_;
 
   HttpTransactionDelegate* transaction_delegate_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_TRANSACTION_H_