Remove unused DBusThreadManagerObserver

chromeos/dbus/dbus_thread_manager.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_DBUS_DBUS_THREAD_MANAGER_H_
 #define CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "chromeos/chromeos_export.h"
 
 namespace base {
 class Thread;
 }  // namespace base
 
 namespace dbus {
 class Bus;
 class ObjectPath;
 }  // namespace dbus
 
 namespace chromeos {
 
-class DBusThreadManagerObserver;
-
 // Style Note: Clients are sorted by names.
 class BluetoothAdapterClient;
 class BluetoothAgentManagerClient;
 class BluetoothDeviceClient;
 class BluetoothGattCharacteristicClient;
 class BluetoothGattDescriptorClient;
 class BluetoothGattManagerClient;
 class BluetoothGattServiceClient;
 class BluetoothInputClient;
 class BluetoothProfileManagerClient;
@@ skipping 73 matching lines @@
   // Returns true if DBusThreadManager has been initialized. Call this to
   // avoid initializing + shutting down DBusThreadManager more than once.
   static bool IsInitialized();
 
   // Destroys the global instance.
   static void Shutdown();
 
   // Gets the global instance. Initialize() must be called first.
   static DBusThreadManager* Get();
 
-  // Adds or removes an observer.
-  virtual void AddObserver(DBusThreadManagerObserver* observer) = 0;
-  virtual void RemoveObserver(DBusThreadManagerObserver* observer) = 0;
-
   // Returns various D-Bus bus instances, owned by DBusThreadManager.
   virtual dbus::Bus* GetSystemBus() = 0;
 
   // All returned objects are owned by DBusThreadManager.  Do not cache these
   // pointers and use them after DBusThreadManager has been shut down.
   virtual BluetoothAdapterClient* GetBluetoothAdapterClient() = 0;
   virtual BluetoothAgentManagerClient* GetBluetoothAgentManagerClient() = 0;
   virtual BluetoothDeviceClient* GetBluetoothDeviceClient() = 0;
   virtual BluetoothGattCharacteristicClient*
       GetBluetoothGattCharacteristicClient() = 0;
@@ skipping 43 matching lines @@
 
   // Initializes |client| with the |system_bus_|.
   static void InitClient(DBusClient* client);
 
   DISALLOW_COPY_AND_ASSIGN(DBusThreadManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_