Give InputMethodWin an out-of-line destructor.

ui/base/ime/input_method_win.cc

 // 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.
 
 #include "ui/base/ime/input_method_win.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/auto_reset.h"
@@ skipping 34 matching lines @@
     : toplevel_window_handle_(toplevel_window_handle),
       pending_requested_direction_(base::i18n::UNKNOWN_DIRECTION),
       accept_carriage_return_(false),
       enabled_(false),
       is_candidate_popup_open_(false),
       composing_window_handle_(NULL),
       weak_ptr_factory_(this) {
   SetDelegate(delegate);
 }
 
+InputMethodWin::~InputMethodWin() {}
+
 bool InputMethodWin::OnUntranslatedIMEMessage(
     const base::NativeEvent& event,
     InputMethod::NativeEventResult* result) {
   LRESULT original_result = 0;
   BOOL handled = FALSE;
 
   switch (event.message) {
     case WM_IME_SETCONTEXT:
       original_result = OnImeSetContext(
           event.hwnd, event.message, event.wParam, event.lParam, &handled);
@@ skipping 601 matching lines @@
       enabled_ = true;
       break;
   }
 
   imm32_manager_.SetTextInputMode(window_handle, text_input_mode);
   tsf_inputscope::SetInputScopeForTsfUnawareWindow(
       window_handle, text_input_type, text_input_mode);
 }
 
 }  // namespace ui