Remove PlatformMouseEvent and use WebMouseEvent instead

third_party/WebKit/Source/core/input/EventHandlingUtil.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/input/EventHandlingUtil.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/paint/PaintLayer.h"
 #include "platform/scroll/ScrollableArea.h"
+#include "public/platform/WebMouseEvent.h"
 
 namespace blink {
 namespace EventHandlingUtil {
 
 HitTestResult hitTestResultInFrame(LocalFrame* frame,
                                    const LayoutPoint& point,
                                    HitTestRequest::HitTestRequestType hitType) {
   HitTestResult result(HitTestRequest(hitType), point);
 
   if (!frame || frame->contentLayoutItem().isNull())
@@ skipping 81 matching lines @@
                                       const IntPoint& pointInRootFrame) {
   FrameView* view = frame->view();
   // FIXME: Is it really OK to use the wrong coordinates here when view is 0?
   // Historically the code would just crash; this is clearly no worse than that.
   return view ? view->rootFrameToContents(pointInRootFrame) : pointInRootFrame;
 }
 
 MouseEventWithHitTestResults performMouseEventHitTest(
     LocalFrame* frame,
     const HitTestRequest& request,
-    const PlatformMouseEvent& mev) {
+    const WebMouseEvent& mev) {
   DCHECK(frame);
   DCHECK(frame->document());
 
   return frame->document()->performMouseEventHitTest(
-      request, contentPointFromRootFrame(frame, mev.position()), mev);
+      request, contentPointFromRootFrame(
+                   frame, flooredIntPoint(mev.positionInRootFrame())),
+      mev);
 }
 
 }  // namespace EventHandlingUtil
 }  // namespace blink