Refactoring button field and its type

chrome/browser/chromeos/input_method/textinput_test_helper.cc

 // Copyright (c) 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 "ash/shell.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chromeos/input_method/textinput_test_helper.h"
@@ skipping 180 matching lines @@
       tab,
       "textinput_helper.retrieveElementCoordinate('" + id + "')",
       &coordinate))
     return false;
   gfx::Rect rect;
   if (!ConvertRectFromString(coordinate, &rect))
     return false;
 
   blink::WebMouseEvent mouse_event;
   mouse_event.type = blink::WebInputEvent::MouseDown;
-  mouse_event.button = blink::WebMouseEvent::ButtonLeft;
+  mouse_event.button = blink::WebMouseEvent::Button::Left;
   mouse_event.x = rect.CenterPoint().x();
   mouse_event.y = rect.CenterPoint().y();
   mouse_event.clickCount = 1;
   tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
 
   mouse_event.type = blink::WebInputEvent::MouseUp;
   tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
   return true;
 }
 
 } // namespace chromeos