Remove PlatformMouseEvent and use WebMouseEvent instead

third_party/WebKit/Source/core/page/AutoscrollController.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 185 matching lines @@
     UseCounter::count(m_page->mainFrame(), UseCounter::DragAndDropScrollStart);
     startAutoscroll();
   } else if (m_autoscrollLayoutObject != scrollable) {
     m_dragAndDropAutoscrollStartTime = eventTime;
     m_autoscrollLayoutObject = scrollable;
   }
 }
 
 void AutoscrollController::handleMouseReleaseForMiddleClickAutoscroll(
     LocalFrame* frame,
-    const PlatformMouseEvent& mouseEvent) {
+    const WebMouseEvent& mouseEvent) {
   DCHECK(RuntimeEnabledFeatures::middleClickAutoscrollEnabled());
   if (!frame->isMainFrame())
     return;
   switch (m_autoscrollType) {
     case AutoscrollForMiddleClick:
-      if (mouseEvent.pointerProperties().button ==
-          WebPointerProperties::Button::Middle)
+      if (mouseEvent.button == WebPointerProperties::Button::Middle)
         m_autoscrollType = AutoscrollForMiddleClickCanStop;
       break;
     case AutoscrollForMiddleClickCanStop:
       stopAutoscroll();
       break;
     case AutoscrollForDragAndDrop:
     case AutoscrollForSelection:
     case NoAutoscroll:
       // Nothing to do.
       break;
@@ skipping 185 matching lines @@
   } else if (east) {
     view->setCursor(eastPanningCursor());
   } else if (west) {
     view->setCursor(westPanningCursor());
   } else {
     view->setCursor(middlePanningCursor());
   }
 }
 
 }  // namespace blink