RefCounted types should not have public destructors

chrome/browser/extensions/api/bluetooth/bluetooth_api.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_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_BLUETOOTH_BLUETOOTH_API_H_
 #pragma once
 
 #include "chrome/browser/extensions/extension_function.h"
 
@@ skipping 77 matching lines @@
 #if defined(OS_CHROMEOS)
   void AddDeviceIfTrue(
       ListValue* list, const chromeos::BluetoothDevice* device, bool result);
 
   int callbacks_pending_;
 #endif
 };
 
 class BluetoothConnectFunction : public AsyncExtensionFunction {
  public:
+  DECLARE_EXTENSION_FUNCTION_NAME("experimental.bluetooth.connect")
+
+ protected:
+  virtual ~BluetoothConnectFunction() {}
+
   virtual bool RunImpl() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME("experimental.bluetooth.connect")
 
  private:
 #if defined(OS_CHROMEOS)
   void ConnectToServiceCallback(
       const chromeos::BluetoothDevice* device,
       const std::string& service_uuid,
       scoped_refptr<chromeos::BluetoothSocket> socket);
 #endif
 };
 
@@ skipping 53 matching lines @@
   virtual ~BluetoothWriteFunction() {}
 
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 };
 
 }  // namespace api
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_BLUETOOTH_BLUETOOTH_API_H_