Implement querying CPU time on Windows for systemInfo.cpu API

chrome/browser/extensions/api/system_info_cpu/cpu_info_provider.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 CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_CPU_CPU_INFO_PROVIDER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_CPU_CPU_INFO_PROVIDER_H_
 
 #include "chrome/browser/extensions/system_info_provider.h"
 
 #include <vector>
 
@@ skipping 27 matching lines @@
  private:
   // The amount of time that CPU spent on performing different kinds of work.
   // It is used to calculate the usage percent for processors.
   struct CpuTime {
     int64 user;   // user mode.
     int64 kernel; // kernel mode.
     int64 idle;   // twiddling thumbs.
   };
 
   // Platform specific implementation for querying the CPU time information
-  // for each processor. Note that the first element is the total aggregated
-  // numbers of all logic processors.
+  // for each processor.
   bool QueryCpuTimePerProcessor(std::vector<CpuTime>* times);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_CPU_CPU_INFO_PROVIDER_H_