Support invisible underline for IME composition.

chrome/browser/chromeos/input_method/input_method_engine.cc

 // 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.
 
 #include "chrome/browser/chromeos/input_method/input_method_engine.h"
 
 #undef FocusIn
 #undef FocusOut
 #undef RootWindow
 #include <map>
@@ skipping 200 matching lines @@
        segment != segments.end(); ++segment) {
     CompositionText::UnderlineAttribute underline;
 
     switch (segment->style) {
       case SEGMENT_STYLE_UNDERLINE:
         underline.type = CompositionText::COMPOSITION_TEXT_UNDERLINE_SINGLE;
         break;
       case SEGMENT_STYLE_DOUBLE_UNDERLINE:
         underline.type = CompositionText::COMPOSITION_TEXT_UNDERLINE_DOUBLE;
         break;
+      case SEGMENT_STYLE_NO_UNDERLINE:
+        underline.type = CompositionText::COMPOSITION_TEXT_UNDERLINE_NONE;
+        break;
       default:
         continue;
     }
 
     underline.start_index = segment->start;
     underline.end_index = segment->end;
     composition_text_->mutable_underline_attributes()->push_back(underline);
   }
 
   // TODO(nona): Makes focus out mode configuable, if necessary.
@@ skipping 447 matching lines @@
           // TODO(nona): Implement it.
           break;
       }
     }
   }
 
   // TODO(nona): Support item.children.
 }
 
 }  // namespace chromeos