Simplify InputMethodWin initialization.

ui/base/ime/dummy_input_method.h

 // Copyright 2013 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_DUMMY_INPUT_METHOD_H_
 #define UI_BASE_IME_DUMMY_INPUT_METHOD_H_
 
 #include "ui/base/ime/input_method.h"
 
 namespace ui {
@@ skipping 13 matching lines @@
                                 NativeEventResult* result) override;
   void SetFocusedTextInputClient(TextInputClient* client) override;
   void DetachTextInputClient(TextInputClient* client) override;
   TextInputClient* GetTextInputClient() const override;
   bool DispatchKeyEvent(const 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;
-  bool IsActive() override;
   TextInputType GetTextInputType() const override;
   TextInputMode GetTextInputMode() const override;
   int GetTextInputFlags() const override;
   bool CanComposeInline() const override;
   bool IsCandidatePopupOpen() const override;
   void ShowImeIfNeeded() override;
 
   void AddObserver(InputMethodObserver* observer) override;
   void RemoveObserver(InputMethodObserver* observer) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DummyInputMethod);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_DUMMY_INPUT_METHOD_H_