HWID and VPD values should be accessible via SystemAccess::GetMachineStatistic

chrome/browser/chromeos/system_access.h

 // Copyright (c) 2011 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_CHROMEOS_SYSTEM_ACCESS_H_
 #define CHROME_BROWSER_CHROMEOS_SYSTEM_ACCESS_H_
 #pragma once
 
-#include <map>
 #include <string>
-#include <vector>
 
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/singleton.h"
-#include "base/observer_list.h"
 #include "unicode/timezone.h"
 
 namespace chromeos {
 
-// Machine information is represented as a key-value map.
-typedef std::map<std::string, std::string> MachineInfo;
-
-// This class provides access to Chrome OS system APIs such as the
+// This interface provides access to Chrome OS system APIs such as the
 // timezone setting.
 class SystemAccess {
  public:
   class Observer {
    public:
     // Called when the timezone has changed. |timezone| is non-null.
     virtual void TimezoneChanged(const icu::TimeZone& timezone) = 0;
   };
 
   static SystemAccess* GetInstance();
 
   // Returns the current timezone as an icu::Timezone object.
-  const icu::TimeZone& GetTimezone();
+  virtual const icu::TimeZone& GetTimezone() = 0;
 
   // Sets the current timezone. |timezone| must be non-null.
-  void SetTimezone(const icu::TimeZone& timezone);
+  virtual void SetTimezone(const icu::TimeZone& timezone) = 0;
 
   // Retrieve the named machine statistic (e.g. "hardware_class").
-  // This does not update the statistcs.
-  bool GetMachineStatistic(const std::string& name, std::string* result);
+  // This does not update the statistcs. If the |name| is not set, |result|
+  // preserves old value.
+  virtual bool GetMachineStatistic(const std::string& name,
+                                   std::string* result) = 0;
 
-  void AddObserver(Observer* observer);
-  void RemoveObserver(Observer* observer);
+  virtual void AddObserver(Observer* observer) = 0;
+  virtual void RemoveObserver(Observer* observer) = 0;
 
- private:
-  friend struct DefaultSingletonTraits<SystemAccess>;
-
-  SystemAccess();
-  // Updates the machine statistcs by examining the system.
-  void UpdateMachineStatistics();
-
-  scoped_ptr<icu::TimeZone> timezone_;
-  ObserverList<Observer> observers_;
-  MachineInfo machine_info_;
-
-  DISALLOW_COPY_AND_ASSIGN(SystemAccess);
-};
-
-// The parser is used to get machine info as name-value pairs. Defined
-// here to be accessable by tests.
-class NameValuePairsParser {
- public:
-  typedef std::vector<std::pair<std::string, std::string> > NameValuePairs;
-
-  // The obtained machine info will be written into machine_info.
-  explicit NameValuePairsParser(MachineInfo* machine_info);
-
-  void AddNameValuePair(const std::string& key, const std::string& value);
-
-  // Executes tool and inserts (key, <output>) into name_value_pairs_.
-  bool GetSingleValueFromTool(int argc, const char* argv[],
-                              const std::string& key);
-  // Executes tool, parses the output using ParseNameValuePairs,
-  // and inserts the results into name_value_pairs_.
-  bool ParseNameValuePairsFromTool(int argc, const char* argv[],
-                                   const std::string& eq,
-                                   const std::string& delim);
-
- private:
-  // This will parse strings with output in the format:
-  // <key><EQ><value><DELIM>[<key><EQ><value>][...]
-  // e.g. ParseNameValuePairs("key1=value1 key2=value2", "=", " ")
-  bool ParseNameValuePairs(const std::string& in_string,
-                           const std::string& eq,
-                           const std::string& delim);
-
-  MachineInfo* machine_info_;
-
-  DISALLOW_COPY_AND_ASSIGN(NameValuePairsParser);
+ protected:
+  virtual ~SystemAccess() {}
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SYSTEM_ACCESS_H_