Combine the WM_CHAR with WM_KEY* for key event flow.

ui/base/ime/remote_input_method_win.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_REMOTE_INPUT_METHOD_WIN_H_
 #define UI_BASE_IME_REMOTE_INPUT_METHOD_WIN_H_
 
 #include <Windows.h>
 
 #include <string>
@@ skipping 73 matching lines @@
       const CompositionText& composition_text) = 0;
 
   // Handles text-commit events occurred in the metro_driver process.
   // Caveats: This method is designed to be used only with
   // metro_driver::TextService. In other words, there is no garantee that this
   // method works a wrapper to call ui::TextInputClient::InsertText. In fact,
   // this method may call ui::TextInputClient::InsertChar when the text input
   // type of the focused text input client is TEXT_INPUT_TYPE_NONE.
   virtual void OnTextCommitted(const base::string16& text) = 0;
 
+  // Handles the translated WM_CHAR from WM_KEYDOWN/WM_KEYUP.
+  // This method is called when the WM_CHAR occurs with a WM_KEYDOWN/WM_KEYUP,
+  // thus it needs to be cached and will be processed once a key event is
+  // received.
+  virtual void OnCharForNextKeyEvent(base::char16 ch) = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(RemoteInputMethodPrivateWin);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_REMOTE_INPUT_METHOD_WIN_H_