WebMouseEvent coordinates are now fractional & private

third_party/WebKit/Source/core/events/MouseEvent.cpp

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 150 matching lines @@
           canBubble,
           cancelable,
           abstractView,
           detail,
           static_cast<WebInputEvent::Modifiers>(event.modifiers()),
           TimeTicks::FromSeconds(event.timeStampSeconds()),
           abstractView
               ? abstractView->getInputDeviceCapabilities()->firesTouchEvents(
                     event.fromTouch())
               : nullptr),
-      m_screenLocation(event.globalX, event.globalY),
+      m_screenLocation(event.positionInScreen().x, event.positionInScreen().y),
       m_movementDelta(flooredIntPoint(event.movementInRootFrame())),
       m_positionType(PositionType::Position),
       m_button(static_cast<short>(event.button)),
       m_buttons(webInputEventModifiersToButtons(event.modifiers())),
       m_relatedTarget(relatedTarget),
       m_syntheticEventType(event.fromTouch() ? FromTouch
                                              : RealOrIndistinguishable),
       m_region(region) {
   IntPoint rootFrameCoordinates = flooredIntPoint(event.positionInRootFrame());
   initCoordinatesFromRootFrame(rootFrameCoordinates.x(),
@@ skipping 388 matching lines @@
 
 int MouseEvent::offsetY() {
   if (!hasPosition())
     return 0;
   if (!m_hasCachedRelativePosition)
     computeRelativePosition();
   return std::round(m_offsetLocation.y());
 }
 
 }  // namespace blink