Clear power consumption auditing when you clear history.

components/power/origin_power_map.h

 // Copyright 2014 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 COMPONENTS_POWER_ORIGIN_POWER_MAP_H_
 #define COMPONENTS_POWER_ORIGIN_POWER_MAP_H_
 
 #include <map>
 
 #include "base/callback_list.h"
@@ skipping 25 matching lines @@
   PercentOriginMap GetPercentOriginMap();
 
   // Adds a callback for the completion of a round of updates to |origin_map_|.
   scoped_ptr<Subscription> AddPowerConsumptionUpdatedCallback(
       const base::Closure& callback);
 
   // Notifies observers to let them know that the origin power map has finished
   // updating for all origins this cycle.
   void OnAllOriginsUpdated();
 
+  // Clears all URLs out of the map.
+  void ClearOriginMap();
+
  private:
   // OriginMap maps a URL to the amount of power consumed by the URL using the
   // same units as |total_consumed_|.
   typedef std::map<GURL, double> OriginMap;
   OriginMap origin_map_;
 
   // Total amount of power consumed using units determined by
   // the power heuristics available to the platform.
   double total_consumed_;
 
   base::CallbackList<void(void)> callback_list_;
 
   DISALLOW_COPY_AND_ASSIGN(OriginPowerMap);
 };
 
 }  // namespace power
 
 #endif  // COMPONENTS_POWER_ORIGIN_POWER_MAP_H_