Clear power consumption auditing when you clear history.

components/power/origin_power_map.cc

 // 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.
 
 #include "components/power/origin_power_map.h"
 
 #include "base/logging.h"
 #include "content/public/common/url_constants.h"
 #include "url/gurl.h"
 
@@ skipping 41 matching lines @@
 scoped_ptr<OriginPowerMap::Subscription>
 OriginPowerMap::AddPowerConsumptionUpdatedCallback(
     const base::Closure& callback) {
   return callback_list_.Add(callback);
 }
 
 void OriginPowerMap::OnAllOriginsUpdated() {
   callback_list_.Notify();
 }
 
+void OriginPowerMap::ClearOriginMap() {
+  origin_map_.clear();
+  total_consumed_ = 0;
+}
+
 }  // namespace power