Revert of Refactoring button field and its type

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 899 matching lines @@
     // m_client->setMouseOverURL(WebURL());
     PageWidgetEventHandler::handleMouseLeave(mainFrame, event);
 }
 
 void WebFrameWidgetImpl::handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent& event)
 {
     // Take capture on a mouse down on a plugin so we can send it mouse events.
     // If the hit node is a plugin but a scrollbar is over it don't start mouse
     // capture because it will interfere with the scrollbar receiving events.
     IntPoint point(event.x, event.y);
-    if (event.button == WebMouseEvent::Button::Left) {
+    if (event.button == WebMouseEvent::ButtonLeft) {
         point = m_localRoot->frameView()->rootFrameToContents(point);
         HitTestResult result(m_localRoot->frame()->eventHandler().hitTestResultAtPoint(point));
         result.setToShadowHostIfInUserAgentShadowRoot();
         Node* hitNode = result.innerNode();
 
         if (!result.scrollbar() && hitNode && hitNode->layoutObject() && hitNode->layoutObject()->isEmbeddedObject()) {
             m_mouseCaptureNode = hitNode;
             TRACE_EVENT_ASYNC_BEGIN0("input", "capturing mouse", this);
         }
     }
 
     PageWidgetEventHandler::handleMouseDown(mainFrame, event);
 
-    if (event.button == WebMouseEvent::Button::Left && m_mouseCaptureNode)
+    if (event.button == WebMouseEvent::ButtonLeft && m_mouseCaptureNode)
         m_mouseCaptureGestureToken = mainFrame.eventHandler().takeLastMouseDownGestureToken();
 
     // Dispatch the contextmenu event regardless of if the click was swallowed.
     if (!page()->settings().showContextMenuOnMouseUp()) {
 #if OS(MACOSX)
-        if (event.button == WebMouseEvent::Button::Right || (event.button == WebMouseEvent::Button::Left && event.modifiers & WebMouseEvent::ControlKey))
+        if (event.button == WebMouseEvent::ButtonRight || (event.button == WebMouseEvent::ButtonLeft && event.modifiers & WebMouseEvent::ControlKey))
             mouseContextMenu(event);
 #else
-        if (event.button == WebMouseEvent::Button::Right)
+        if (event.button == WebMouseEvent::ButtonRight)
             mouseContextMenu(event);
 #endif
     }
 }
 
 void WebFrameWidgetImpl::mouseContextMenu(const WebMouseEvent& event)
 {
     page()->contextMenuController().clearContextMenu();
 
     PlatformMouseEventBuilder pme(m_localRoot->frameView(), event);
@@ skipping 27 matching lines @@
     // implementation...
 }
 
 void WebFrameWidgetImpl::handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent& event)
 {
     PageWidgetEventHandler::handleMouseUp(mainFrame, event);
 
     if (page()->settings().showContextMenuOnMouseUp()) {
         // Dispatch the contextmenu event regardless of if the click was swallowed.
         // On Mac/Linux, we handle it on mouse down, not up.
-        if (event.button == WebMouseEvent::Button::Right)
+        if (event.button == WebMouseEvent::ButtonRight)
             mouseContextMenu(event);
     }
 }
 
 WebInputEventResult WebFrameWidgetImpl::handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent& event)
 {
     return PageWidgetEventHandler::handleMouseWheel(mainFrame, event);
 }
 
 WebInputEventResult WebFrameWidgetImpl::handleGestureEvent(const WebGestureEvent& event)
@@ skipping 455 matching lines @@
 }
 
 LocalFrame* WebFrameWidgetImpl::focusedLocalFrameAvailableForIme() const
 {
     if (!m_imeAcceptEvents)
         return nullptr;
     return focusedLocalFrameInWidget();
 }
 
 } // namespace blink