Remove PlatformMouseEvent and use WebMouseEvent instead

third_party/WebKit/Source/core/input/ScrollManager.cpp

Index: third_party/WebKit/Source/core/input/ScrollManager.cpp
diff --git a/third_party/WebKit/Source/core/input/ScrollManager.cpp b/third_party/WebKit/Source/core/input/ScrollManager.cpp
index 0a5c306b0383dd87fcb8bb7e8ec4df734fc21617..12de4c6bf407d4ce9d98502b8c486828c6110822 100644
--- a/third_party/WebKit/Source/core/input/ScrollManager.cpp
+++ b/third_party/WebKit/Source/core/input/ScrollManager.cpp
@@ -506,11 +506,12 @@ 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);
   }
 }