Add NetworkHandler to own network handlers in src/chromeos/network

chromeos/network/network_configuration_handler.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 CHROMEOS_NETWORK_NETWORK_CONFIGURATION_HANDLER_H_
 #define CHROMEOS_NETWORK_NETWORK_CONFIGURATION_HANDLER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "chromeos/chromeos_export.h"
+#include "chromeos/network/network_handler.h"
 #include "chromeos/network/network_handler_callbacks.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace chromeos {
 
 // The NetworkConfigurationHandler class is used to create and configure
 // networks in ChromeOS. It mostly calls through to the Shill service API, and
@@ skipping 11 matching lines @@
 // |error_callback|. When the operation succeeds, |callback| will be called, and
 // when it doesn't, |error_callback| will be called with information about the
 // error, including a symbolic name for the error and often some error message
 // that is suitable for logging. None of the error message text is meant for
 // user consumption.
 
 class CHROMEOS_EXPORT NetworkConfigurationHandler {
  public:
   ~NetworkConfigurationHandler();
 
-  // Sets the global instance. Must be called before any calls to Get().
-  static void Initialize();
-
-  // Destroys the global instance.
-  static void Shutdown();
-
-  // Gets the global instance. Initialize() must be called first.
-  static NetworkConfigurationHandler* Get();
-
   // Gets the properties of the network with id |service_path|. See note on
   // |callback| and |error_callback|, in class description above.
   void GetProperties(
       const std::string& service_path,
       const network_handler::DictionaryResultCallback& callback,
       const network_handler::ErrorCallback& error_callback) const;
 
   // Sets the properties of the network with id |service_path|. This means the
   // given properties will be merged with the existing settings, and it won't
   // clear any existing properties. See note on |callback| and |error_callback|,
@@ skipping 25 matching lines @@
 
   // Removes the network |service_path| from the remembered network list in the
   // active Shill profile. The network may still show up in the visible networks
   // after this, but no profile configuration will remain. See note on
   // |callback| and |error_callback|, in class description above.
   void RemoveConfiguration(
       const std::string& service_path,
       const base::Closure& callback,
       const network_handler::ErrorCallback& error_callback) const;
 
- private:
+  // Construct and initialize an instance for testing.
+  static NetworkConfigurationHandler* InitializeForTest();
+
+ protected:
+  friend class NetworkHandler;
   friend class NetworkConfigurationHandlerTest;
   NetworkConfigurationHandler();
 
   DISALLOW_COPY_AND_ASSIGN(NetworkConfigurationHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_NETWORK_NETWORK_CONFIGURATION_HANDLER_H_