Make PointerEvent coordinates fractional for touch

third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp

Index: third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
diff --git a/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp b/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
index 30ba23a1eaa78aa5425e45153dafcf60e03fac1b..e6ac9501291888ad35b2eefae831b982fb7bcf0a 100644
--- a/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
+++ b/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
@@ -107,18 +107,20 @@ MouseRelatedEvent::MouseRelatedEvent(
 MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType,
                                      const MouseEventInit& initializer)
     : UIEventWithKeyState(eventType, initializer),
-      m_screenLocation(IntPoint(initializer.screenX(), initializer.screenY())),
+      m_screenLocation(LayoutPoint(
+          FloatPoint(initializer.screenX(), initializer.screenY()))),
       m_movementDelta(
           IntPoint(initializer.movementX(), initializer.movementY())),
       m_positionType(PositionType::Position) {
-  initCoordinates(IntPoint(initializer.clientX(), initializer.clientY()));
+  initCoordinates(initializer.clientX(), initializer.clientY());
 }
 
-void MouseRelatedEvent::initCoordinates(const LayoutPoint& clientLocation) {
+void MouseRelatedEvent::initCoordinates(const double clientX,
+                                        const double clientY) {
   // Set up initial values for coordinates.
   // Correct values are computed lazily, see computeRelativePosition.
-  m_clientLocation = clientLocation;
-  m_pageLocation = clientLocation + contentsScrollOffset(view());
+  m_clientLocation = LayoutPoint(FloatPoint(clientX, clientY));
+  m_pageLocation = m_clientLocation + contentsScrollOffset(view());
 
   m_layerLocation = m_pageLocation;
   m_offsetLocation = m_pageLocation;