Make PointerEvent coordinates fractional for touch

third_party/WebKit/Source/web/WebInputEventConversion.cpp

Index: third_party/WebKit/Source/web/WebInputEventConversion.cpp
diff --git a/third_party/WebKit/Source/web/WebInputEventConversion.cpp b/third_party/WebKit/Source/web/WebInputEventConversion.cpp
index c41f9e64ca2ea778fd52382cb9649c672c2c535f..46bbd56335f43d131dcd5d48afc2bfef2d8d0207 100644
--- a/third_party/WebKit/Source/web/WebInputEventConversion.cpp
+++ b/third_party/WebKit/Source/web/WebInputEventConversion.cpp
@@ -475,13 +475,13 @@ PlatformTouchEventBuilder::PlatformTouchEventBuilder(
 }
 
 static FloatPoint convertAbsoluteLocationForLayoutObjectFloat(
-    const LayoutPoint& location,
+    const DoublePoint& location,
     const LayoutItem layoutItem) {
   return layoutItem.absoluteToLocal(FloatPoint(location), UseTransforms);
 }
 
-static IntPoint convertAbsoluteLocationForLayoutObject(
-    const LayoutPoint& location,
+static IntPoint convertAbsoluteLocationForLayoutObjectInt(
+    const DoublePoint& location,
     const LayoutItem layoutItem) {
   return roundedIntPoint(
       convertAbsoluteLocationForLayoutObjectFloat(location, layoutItem));
@@ -500,15 +500,15 @@ static void updateWebMouseEventFromCoreMouseEvent(
   FrameView* view = widget ? toFrameView(widget->parent()) : 0;
   // TODO(bokan): If view == nullptr, pointInRootFrame will really be
   // pointInRootContent.
-  IntPoint pointInRootFrame = IntPoint(event.absoluteLocation().x().toInt(),
-                                       event.absoluteLocation().y().toInt());
+  IntPoint pointInRootFrame(event.absoluteLocation().x(),
+                            event.absoluteLocation().y());
   if (view)
     pointInRootFrame = view->contentsToRootFrame(pointInRootFrame);
   webEvent.globalX = event.screenX();
   webEvent.globalY = event.screenY();
   webEvent.windowX = pointInRootFrame.x();
   webEvent.windowY = pointInRootFrame.y();
-  IntPoint localPoint = convertAbsoluteLocationForLayoutObject(
+  IntPoint localPoint = convertAbsoluteLocationForLayoutObjectInt(
       event.absoluteLocation(), layoutItem);
   webEvent.x = localPoint.x();
   webEvent.y = localPoint.y();
@@ -618,8 +618,8 @@ WebMouseEventBuilder::WebMouseEventBuilder(const Widget* widget,
   modifiers |= WebInputEvent::LeftButtonDown;
   clickCount = (type == MouseDown || type == MouseUp);
 
-  IntPoint localPoint = convertAbsoluteLocationForLayoutObject(
-      touch->absoluteLocation(), layoutItem);
+  IntPoint localPoint = convertAbsoluteLocationForLayoutObjectInt(
+      DoublePoint(touch->absoluteLocation()), layoutItem);
   x = localPoint.x();
   y = localPoint.y();
 
@@ -684,7 +684,7 @@ static WebTouchPoint toWebTouchPoint(const Touch* touch,
   point.id = touch->identifier();
   point.screenPosition = touch->screenLocation();
   point.position = convertAbsoluteLocationForLayoutObjectFloat(
-      touch->absoluteLocation(), layoutItem);
+      DoublePoint(touch->absoluteLocation()), layoutItem);
   point.radiusX = touch->radiusX();
   point.radiusY = touch->radiusY();
   point.rotationAngle = touch->rotationAngle();
@@ -811,7 +811,7 @@ WebGestureEventBuilder::WebGestureEventBuilder(const LayoutItem layoutItem,
 
   globalX = event.screenX();
   globalY = event.screenY();
-  IntPoint localPoint = convertAbsoluteLocationForLayoutObject(
+  IntPoint localPoint = convertAbsoluteLocationForLayoutObjectInt(
       event.absoluteLocation(), layoutItem);
   x = localPoint.x();
   y = localPoint.y();