Simplify InputMethodWin initialization.

ui/base/ime/input_method.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 UI_BASE_IME_INPUT_METHOD_H_
 #define UI_BASE_IME_INPUT_METHOD_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 103 matching lines @@
   // This method is currently used only on Windows.
   // This method does not take a parameter of TextInputClient for historical
   // reasons.
   // TODO(ime): Consider to take a parameter of TextInputClient.
   virtual void OnInputLocaleChanged() = 0;
 
   // Returns the locale of current keyboard layout or input method, as a BCP-47
   // tag, or an empty string if the input method cannot provide it.
   virtual std::string GetInputLocale() = 0;
 
-  // Checks if the input method is active, i.e. if it's ready for processing
-  // keyboard event and generate composition or text result.
-  // If the input method is inactive, then it's not necessary to inform it the
-  // changes of caret bounds and text input type.
-  // Note: character results may still be generated and sent to the text input
-  // client by calling TextInputClient::InsertChar(), even if the input method
-  // is not active.
-  virtual bool IsActive() = 0;
-
   // TODO(yoichio): Following 3 methods(GetTextInputType, GetTextInputMode and
   // CanComposeInline) calls client's same method and returns its value. It is
   // not InputMethod itself's infomation. So rename these to
   // GetClientTextInputType and so on.
   // Gets the text input type of the focused text input client. Returns
   // ui::TEXT_INPUT_TYPE_NONE if there is no focused client.
   virtual TextInputType GetTextInputType() const = 0;
 
   // Gets the text input mode of the focused text input client. Returns
   // ui::TEXT_INPUT_TYPE_DEFAULT if there is no focused client.
@@ skipping 15 matching lines @@
   virtual void ShowImeIfNeeded() = 0;
 
   // Management of the observer list.
   virtual void AddObserver(InputMethodObserver* observer) = 0;
   virtual void RemoveObserver(InputMethodObserver* observer) = 0;
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_INPUT_METHOD_H_