Show composition window for IME-unaware PPAPI plugins on Windows.

ui/base/win/ime_input.h

 // Copyright (c) 2011 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_WIN_IME_INPUT_H_
 #define UI_BASE_WIN_IME_INPUT_H_
 
 #include <windows.h>
 
 #include <string>
@@ skipping 209 matching lines @@
 
   // Updates the caret position of the given window.
   // Parameters
   //   * window_handle [in] (HWND)
   //     Represents the window handle of the caller.
   //   * caret_rect [in] (const gfx::Rect&)
   //     Represent the rectangle of the input caret.
   //     This rectangle is used for controlling the positions of IME windows.
   void UpdateCaretRect(HWND window_handle, const gfx::Rect& caret_rect);
 
+  // Updates the setting whether we want IME to render composition text.
+  void SetUseCompositionWindow(bool use_composition_window);
+
   // 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;
 
 
@@ skipping 58 matching lines @@
 
   // Represents whether or not the current input context has created a system
   // caret to set the position of its IME candidate window.
   //   * true: it creates a system caret.
   //   * false: it does not create a system caret.
   bool system_caret_;
 
   // The rectangle of the input caret retrieved from a renderer process.
   gfx::Rect caret_rect_;
 
+  // Indicates whether or not we want IME to render composition text.
+  bool use_composition_window_;
+
   DISALLOW_COPY_AND_ASSIGN(ImeInput);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_WIN_IME_INPUT_H_