Retry 114494 - Remove BindStateHolder and have Bind() return a Callback<> object directly."

chrome/browser/chromeos/dbus/bluetooth_manager_client.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_DBUS_BLUETOOTH_MANAGER_CLIENT_H_
 #define CHROME_BROWSER_CHROMEOS_DBUS_BLUETOOTH_MANAGER_CLIENT_H_
 #pragma once
 
 #include <string>
 
@@ skipping 27 matching lines @@
 
   virtual ~BluetoothManagerClient();
 
   // Adds and removes the observer.
   virtual void AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(Observer* observer) = 0;
 
   // The DefaultAdapterCallback receives two arguments:
   // std::string adapter - the unique identifier of the default adapter
   // bool success - whether or not the request succeeded
-  typedef base::Callback<void(std::string, bool)> DefaultAdapterCallback;
+  typedef base::Callback<void(const std::string&, bool)>
+      DefaultAdapterCallback;
 
   // Retrieves the dbus object path for the default adapter.
   // The default adapter is the preferred local bluetooth interface when a
   // client does not specify a particular interface.
   virtual void DefaultAdapter(const DefaultAdapterCallback& callback) = 0;
 
   // Creates the instance.
   static BluetoothManagerClient* Create(dbus::Bus* bus);
 
  protected:
   BluetoothManagerClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BluetoothManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_DBUS_BLUETOOTH_MANAGER_CLIENT_H_