Add parser for new cpu freq file

chrome/browser/ui/webui/chromeos/power_ui.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 "chrome/browser/ui/webui/chromeos/power_ui.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 158 matching lines @@
       const CpuDataCollector::StateOccupancySample& sample = sample_deque[i];
       std::unique_ptr<base::DictionaryValue> js_sample(
           new base::DictionaryValue);
       js_sample->SetDouble("time", sample.time.ToJsTime());
       js_sample->SetBoolean("cpuOnline", sample.cpu_online);
 
       std::unique_ptr<base::DictionaryValue> state_dict(
           new base::DictionaryValue);
       for (size_t index = 0; index < sample.time_in_state.size(); ++index) {
         state_dict->SetDouble(state_names[index],
-                              static_cast<double>(sample.time_in_state[index]));
+                              sample.time_in_state[index].InMillisecondsF());
       }
       js_sample->Set("timeInState", std::move(state_dict));
 
       js_sample_list->Append(std::move(js_sample));
     }
     js_data->Append(std::move(js_sample_list));
   }
 }
 
 }  // namespace
@@ skipping 49 matching lines @@
   html->SetDefaultResource(IDR_ABOUT_POWER_HTML);
 
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource::Add(profile, html);
 }
 
 PowerUI::~PowerUI() {
 }
 
 }  // namespace chromeos