dbus: add ObjectPath type

chrome/browser/chromeos/dbus/bluetooth_adapter_client.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_CHROMEOS_DBUS_BLUETOOTH_ADAPTER_CLIENT_H_
 #define CHROME_BROWSER_CHROMEOS_DBUS_BLUETOOTH_ADAPTER_CLIENT_H_
 #pragma once
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/observer_list.h"
 #include "base/values.h"
+#include "dbus/object_path.h"
 
 namespace dbus {
 class Bus;
 }  // namespace dbus
 
 namespace chromeos {
 
 class BluetoothManagerClient;
 
 // BluetoothAdapterClient is used to communicate with a bluetooth Adapter
 // interface.
 class BluetoothAdapterClient {
  public:
   // Interface for observing changes from a local bluetooth adapter.
   class Observer {
    public:
     virtual ~Observer() {}
 
     // Called when a new known device has been created.
-    virtual void DeviceCreated(const std::string& object_path,
-                               const std::string& device_path) {}
+    virtual void DeviceCreated(const dbus::ObjectPath& object_path,
+                               const dbus::ObjectPath& device_path) {}
 
     // Called when a previously known device is removed.
-    virtual void DeviceRemoved(const std::string& object_path,
-                               const std::string& device_path) {}
+    virtual void DeviceRemoved(const dbus::ObjectPath& object_path,
+                               const dbus::ObjectPath& device_path) {}
 
     // Called when the adapter's Discovering property changes.
-    virtual void DiscoveringPropertyChanged(const std::string& object_path,
+    virtual void DiscoveringPropertyChanged(const dbus::ObjectPath& object_path,
                                             bool discovering) {}
 
     // Called when a new remote device has been discovered.
     // |device_properties| should be copied if needed.
-    virtual void DeviceFound(const std::string& object_path,
+    virtual void DeviceFound(const dbus::ObjectPath& object_path,
                              const std::string& address,
                              const DictionaryValue& device_properties) {}
 
     // Called when a previously discovered device is no longer visible.
-    virtual void DeviceDisappeared(const std::string& object_path,
+    virtual void DeviceDisappeared(const dbus::ObjectPath& object_path,
                                    const std::string& address) {}
   };
 
   virtual ~BluetoothAdapterClient();
 
   // Adds and removes observers for events on the adapter with object path
   // |object_path|.
   virtual void AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(Observer* observer) = 0;
 
   // Starts a device discovery on the adapter with object path |object_path|.
-  virtual void StartDiscovery(const std::string& object_path) = 0;
+  virtual void StartDiscovery(const dbus::ObjectPath& object_path) = 0;
 
   // Cancels any previous device discovery on the adapter with object path
   // |object_path|.
-  virtual void StopDiscovery(const std::string& object_path) = 0;
+  virtual void StopDiscovery(const dbus::ObjectPath& object_path) = 0;
 
   // Creates the instance.
   static BluetoothAdapterClient* Create(dbus::Bus* bus,
                                         BluetoothManagerClient* manager_client);
 
  protected:
   BluetoothAdapterClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_DBUS_BLUETOOTH_ADAPTER_CLIENT_H_