Support invisible underline for IME composition.

chrome/browser/chromeos/input_method/input_method_engine_interface.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 CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_INTERFACE_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_INTERFACE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 45 matching lines @@
 
   enum MouseButtonEvent {
     MOUSE_BUTTON_LEFT,
     MOUSE_BUTTON_RIGHT,
     MOUSE_BUTTON_MIDDLE,
   };
 
   enum SegmentStyle {
     SEGMENT_STYLE_UNDERLINE,
     SEGMENT_STYLE_DOUBLE_UNDERLINE,
+    SEGMENT_STYLE_NO_UNDERLINE,
   };
 
   enum CandidateWindowPosition {
     WINDOW_POS_CURSOR,
     WINDOW_POS_COMPOSITTION,
   };
 
   struct MenuItem {
     MenuItem();
     virtual ~MenuItem();
@@ skipping 165 matching lines @@
                                      size_t number_of_chars,
                                      std::string* error) = 0;
 
   // Hides the input view window (from API call).
   virtual void HideInputView() = 0;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_INTERFACE_H_