Simplify InputMethodWin initialization.

ui/base/ime/input_method_chromeos.h

 // Copyright 2014 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_CHROMEOS_H_
 #define UI_BASE_IME_INPUT_METHOD_CHROMEOS_H_
 
 #include <set>
 #include <string>
 
@@ skipping 20 matching lines @@
   void OnFocus() override;
   void OnBlur() override;
   bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
                                 NativeEventResult* result) 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;
   bool IsCandidatePopupOpen() const override;
 
  protected:
   // Converts |text| into CompositionText.
   void ExtractCompositionText(const chromeos::CompositionText& text,
                               uint32 cursor_position,
                               CompositionText* out_composition) const;
 
   // Process a key returned from the input method.
   virtual void ProcessKeyEventPostIME(const ui::KeyEvent& event,
@@ skipping 93 matching lines @@
 
   // Used for making callbacks.
   base::WeakPtrFactory<InputMethodChromeOS> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InputMethodChromeOS);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_INPUT_METHOD_CHROMEOS_H_