Refactoring button field and its type (2nd try)

content/browser/renderer_host/input/touch_emulator.cc

Index: content/browser/renderer_host/input/touch_emulator.cc
diff --git a/content/browser/renderer_host/input/touch_emulator.cc b/content/browser/renderer_host/input/touch_emulator.cc
index be0550df4f81b8ba9c7b853c6683d9679118027c..0fcc5361ceea1e50c265518aec6a9e57686a5a7a 100644
--- a/content/browser/renderer_host/input/touch_emulator.cc
+++ b/content/browser/renderer_host/input/touch_emulator.cc
@@ -140,12 +140,12 @@ bool TouchEmulator::HandleMouseEvent(const WebMouseEvent& mouse_event) {
   if (!enabled())
     return false;
 
-  if (mouse_event.button == WebMouseEvent::ButtonRight &&
+  if (mouse_event.button == WebMouseEvent::Button::Right &&
       mouse_event.type == WebInputEvent::MouseDown) {
     client_->ShowContextMenuAtPoint(gfx::Point(mouse_event.x, mouse_event.y));
   }
 
-  if (mouse_event.button != WebMouseEvent::ButtonLeft)
+  if (mouse_event.button != WebMouseEvent::Button::Left)
     return true;
 
   if (mouse_event.type == WebInputEvent::MouseMove) {