Make PointerEvent coordinates fractional for touch

third_party/WebKit/Source/core/html/shadow/SliderThumbElement.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 212 matching lines @@
   if (eventType == EventTypeNames::mousedown && isLeftButton) {
     startDragging();
     return;
   }
   if (eventType == EventTypeNames::mouseup && isLeftButton) {
     stopDragging();
     return;
   }
   if (eventType == EventTypeNames::mousemove) {
     if (m_inDragMode)
-      setPositionFromPoint(mouseEvent->absoluteLocation());
+      setPositionFromPoint(LayoutPoint(mouseEvent->absoluteLocation()));
     return;
   }
 
   HTMLDivElement::defaultEventHandler(event);
 }
 
 bool SliderThumbElement::willRespondToMouseMoveEvents() {
   const HTMLInputElement* input = hostInput();
   if (input && !input->isDisabledOrReadOnly() && m_inDragMode)
     return true;
@@ skipping 204 matching lines @@
   updateTouchEventHandlerRegistry();
   HTMLElement::didMoveToNewDocument(oldDocument);
 }
 
 void SliderContainerElement::removeAllEventListeners() {
   Node::removeAllEventListeners();
   m_hasTouchEventHandler = false;
 }
 
 }  // namespace blink