Implemented Asynchronous Initialization of BluetoothAdapter.

chrome/browser/extensions/api/bluetooth/bluetooth_extension_function.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_EXTENSIONS_API_BLUETOOTH_BLUETOOTH_EXTENSION_FUNCTION_H_
 #define CHROME_BROWSER_EXTENSIONS_API_BLUETOOTH_BLUETOOTH_EXTENSION_FUNCTION_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/extension_function.h"
@@ skipping 21 matching lines @@
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 
  private:
   void RunOnAdapterReady(scoped_refptr<device::BluetoothAdapter> adapter);
 
   // Implemented by individual bluetooth extension functions, called
   // automatically once |adapter| has been initialized.
   virtual bool DoWork(scoped_refptr<device::BluetoothAdapter> adapter) = 0;
 
-  base::WeakPtrFactory<BluetoothExtensionFunction> weak_ptr_factory_;
-
   DISALLOW_COPY_AND_ASSIGN(BluetoothExtensionFunction);
 };
 
 }  // namespace api
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_BLUETOOTH_BLUETOOTH_EXTENSION_FUNCTION_H_