RefCounted types should not have public destructors, chrome/browser/extensions

chrome/browser/extensions/extension_input_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_EXTENSION_INPUT_API_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_INPUT_API_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/extensions/extension_function.h"
 
 // Note that this experimental API is currently only available for
 // TOOLKIT_VIEWS (see chrome/chrome_browser.gypi).
 //
 // We may eventually support other platforms by adding the necessary
 // synthetic event distribution code to this Function.
 class SendKeyboardEventInputFunction : public SyncExtensionFunction {
  public:
-  virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME(
       "experimental.input.virtualKeyboard.sendKeyboardEvent");
+
+ protected:
+  virtual ~SendKeyboardEventInputFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunImpl() OVERRIDE;
 };
 
 #if defined(USE_VIRTUAL_KEYBOARD)
 class HideKeyboardFunction : public AsyncExtensionFunction {
  public:
-  virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME(
       "experimental.input.virtualKeyboard.hideKeyboard");
+
+ protected:
+  virtual ~HideKeyboardFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunImpl() OVERRIDE;
 };
 
 class SetKeyboardHeightFunction : public AsyncExtensionFunction {
  public:
-  virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME(
       "experimental.input.virtualKeyboard.setKeyboardHeight");
+
+ protected:
+  virtual ~SetKeyboardHeightFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunImpl() OVERRIDE;
 };
 #endif
 
 #if defined(OS_CHROMEOS) && defined(USE_VIRTUAL_KEYBOARD)
 // Note that these experimental APIs are currently only available for
 // versions of Chrome OS built with USE_VIRTUAL_KEYBOARD. Please also note that
 // the version of Chrome OS is always built with TOOLKIT_VIEWS.
 //
 // We may eventually support other platforms, especially versions of ChromeOS
 // without USE_VIRTUAL_KEYBOARD.
 class SendHandwritingStrokeFunction : public SyncExtensionFunction {
  public:
-  virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME(
       "experimental.input.virtualKeyboard.sendHandwritingStroke");
+
+ protected:
+  virtual ~SendHandwritingStrokeFunction() {}
+  virtual bool RunImpl() OVERRIDE;
 };
 
 class CancelHandwritingStrokesFunction : public SyncExtensionFunction {
  public:
-  virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME(
       "experimental.input.virtualKeyboard.cancelHandwritingStrokes");
+
+ public:
+  virtual ~CancelHandwritingStrokesFunction() {}
+  virtual bool RunImpl() OVERRIDE;
 };
 #endif
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_INPUT_API_H_