WebMouseEvent coordinates are now fractional & private

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

 // Copyright 2016 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 "core/events/PointerEventFactory.h"
 
 #include "core/frame/FrameView.h"
 #include "platform/geometry/FloatSize.h"
 
 namespace blink {
@@ skipping 128 matching lines @@
   pointerEventInit->setTwist(touchPoint.twist);
 }
 
 void updateMousePointerEventInit(const WebMouseEvent& mouseEvent,
                                  LocalDOMWindow* view,
                                  PointerEventInit* pointerEventInit) {
   // This function should not update attributes like pointerId, isPrimary,
   // and pointerType which is the same among the coalesced events and the
   // dispatched event.
 
-  pointerEventInit->setScreenX(mouseEvent.globalX);
-  pointerEventInit->setScreenY(mouseEvent.globalY);
+  pointerEventInit->setScreenX(mouseEvent.positionInScreen().x);
+  pointerEventInit->setScreenY(mouseEvent.positionInScreen().y);
 
   IntPoint locationInFrameZoomed;
   if (view && view->frame() && view->frame()->view()) {
     LocalFrame* frame = view->frame();
     FrameView* frameView = frame->view();
     IntPoint locationInContents = frameView->rootFrameToContents(
         flooredIntPoint(mouseEvent.positionInRootFrame()));
     locationInFrameZoomed = frameView->contentsToFrame(locationInContents);
     float scaleFactor = 1 / frame->pageZoomFactor();
     locationInFrameZoomed.scale(scaleFactor, scaleFactor);
@@ skipping 383 matching lines @@
     const WebPointerProperties& properties) const {
   if (properties.pointerType == WebPointerProperties::PointerType::Mouse)
     return PointerEventFactory::s_mouseId;
   IncomingId id(properties.pointerType, properties.id);
   if (m_pointerIncomingIdMapping.contains(id))
     return m_pointerIncomingIdMapping.at(id);
   return PointerEventFactory::s_invalidId;
 }
 
 }  // namespace blink