Change IME conversion status by focusing input element

ui/base/ime/win/imm32_manager.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_WIN_IMM32_MANAGER_H
 #define UI_BASE_IME_WIN_IMM32_MANAGER_H
 
 #include <windows.h>
 
 #include <string>
@@ skipping 59 matching lines @@
 //   only for inputting East-Asian language texts, but also the ones from
 //   tablets (on Windows XP Tablet PC Edition and Windows Vista), voice
 //   recognizers (e.g. ViaVoice and Microsoft Office), etc.
 //   We can disable TSF and CUAS in Windows XP Tablet PC Edition. On the other
 //   hand, we can NEVER disable either TSF or CUAS in Windows Vista, i.e.
 //   THIS CLASS IS NOT ONLY USED ON THE INPUT CONTEXTS OF EAST-ASIAN
 //   LANGUAGES BUT ALSO USED ON THE INPUT CONTEXTS OF ALL LANGUAGES.
 class UI_EXPORT IMM32Manager {
  public:
   IMM32Manager();
-  ~IMM32Manager();
+  virtual ~IMM32Manager();
 
   // Retrieves whether or not there is an ongoing composition.
   bool is_composing() const { return is_composing_; }
 
   // Retrieves the input language from Windows and update it.
   // Return values
   //   * true
   //     The given input language has IMEs.
   //   * false
   //     The given input language does not have IMEs.
@@ skipping 143 matching lines @@
   // Returns the current input language id.
   LANGID input_language_id() const { return input_language_id_; }
 
   // Returns BCP-47 tag name of the current input language.
   std::string GetInputLanguageName() const;
 
   // Returns the text direction of the current input language.
   base::i18n::TextDirection GetTextDirection() const;
 
   // Sets conversion status corresponding to |input_mode|.
-  void SetTextInputMode(HWND window_handle, TextInputMode input_mode);
+  virtual void SetTextInputMode(HWND window_handle, TextInputMode input_mode);
 
   // Helper functions ----------------------------------------------------------
 
   // Checks if there is any RTL keyboard layout installed in the system.
   static bool IsRTLKeyboardLayoutInstalled();
 
   // Checks if the user pressed both Ctrl and right or left Shift keys to
   // requrest to change the text direction and layout alignment explicitly.
   // Returns true if only a Ctrl key and a Shift key are down. The desired text
   // direction will be stored in |*direction|.
@@ skipping 66 matching lines @@
 
   // Indicates whether or not we want IME to render composition text.
   bool use_composition_window_;
 
   DISALLOW_COPY_AND_ASSIGN(IMM32Manager);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_WIN_IMM32_MANAGER_H