Give InputMethodWin an out-of-line destructor.

ui/base/ime/input_method_win.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 UI_BASE_IME_INPUT_METHOD_WIN_H_
 #define UI_BASE_IME_INPUT_METHOD_WIN_H_
 
 #include <windows.h>
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/base/ime/input_method_base.h"
 #include "ui/base/ime/win/imm32_manager.h"
 
 namespace ui {
 
 // A common InputMethod implementation based on IMM32.
 class UI_BASE_IME_EXPORT InputMethodWin : public InputMethodBase {
  public:
   InputMethodWin(internal::InputMethodDelegate* delegate,
                  HWND toplevel_window_handle);
+  ~InputMethodWin();
 
   // Overridden from InputMethod:
   bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
                                 NativeEventResult* result) override;
   void DispatchKeyEvent(ui::KeyEvent* event) override;
   void OnTextInputTypeChanged(const TextInputClient* client) override;
   void OnCaretBoundsChanged(const TextInputClient* client) override;
   void CancelComposition(const TextInputClient* client) override;
   void OnInputLocaleChanged() override;
   std::string GetInputLocale() override;
@@ skipping 101 matching lines @@
 
   // Used for making callbacks.
   base::WeakPtrFactory<InputMethodWin> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InputMethodWin);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_INPUT_METHOD_WIN_H_