Remove PlatformMouseEvent and use WebMouseEvent instead

third_party/WebKit/Source/core/input/ScrollManager.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/ScrollManager.h"
 
 #include "core/dom/DOMNodeIds.h"
 #include "core/events/GestureEvent.h"
 #include "core/frame/BrowserControls.h"
 #include "core/frame/FrameHost.h"
@@ skipping 488 matching lines @@
     }
   }
 
   return false;
 }
 
 bool ScrollManager::inResizeMode() const {
   return m_resizeScrollableArea && m_resizeScrollableArea->inResizeMode();
 }
 
-void ScrollManager::resize(const PlatformMouseEvent& evt) {
-  if (evt.type() == PlatformEvent::MouseMoved) {
+void ScrollManager::resize(const WebMouseEvent& evt) {
+  if (evt.type() == WebInputEvent::MouseMove) {
     if (!m_frame->eventHandler().mousePressed())
       return;
-    m_resizeScrollableArea->resize(evt.position(), m_offsetFromResizeCorner);
+    m_resizeScrollableArea->resize(flooredIntPoint(evt.positionInRootFrame()),
+                                   m_offsetFromResizeCorner);
   }
 }
 
 void ScrollManager::clearResizeScrollableArea(bool shouldNotBeNull) {
   if (shouldNotBeNull)
     DCHECK(m_resizeScrollableArea);
 
   if (m_resizeScrollableArea)
     m_resizeScrollableArea->setInResizeMode(false);
   m_resizeScrollableArea = nullptr;
@@ skipping 15 matching lines @@
     if (scrollbar->gestureEvent(targetedEvent.event(), &shouldUpdateCapture)) {
       if (shouldUpdateCapture)
         m_scrollbarHandlingScrollGesture = scrollbar;
       return true;
     }
   }
   return false;
 }
 
 }  // namespace blink