WebMouseEvent coordinates are now fractional & private

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 723 matching lines @@
   // FIXME: WebWidget doesn't have the method below.
   // 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);
+  IntPoint point(event.positionInWidget().x, event.positionInWidget().y);
   if (event.button == WebMouseEvent::Button::Left) {
     point = m_localRoot->frameView()->rootFrameToContents(point);
     HitTestResult result(
         m_localRoot->frame()->eventHandler().hitTestResultAtPoint(point));
     result.setToShadowHostIfInRestrictedShadowRoot();
     Node* hitNode = result.innerNode();
 
     if (!result.scrollbar() && hitNode && hitNode->layoutObject() &&
         hitNode->layoutObject()->isEmbeddedObject()) {
       m_mouseCaptureNode = hitNode;
@@ skipping 374 matching lines @@
   return nullptr;
 }
 
 LocalFrame* WebFrameWidgetImpl::focusedLocalFrameAvailableForIme() const {
   if (!m_imeAcceptEvents)
     return nullptr;
   return focusedLocalFrameInWidget();
 }
 
 }  // namespace blink