Remove Event.relatedTargetScoped and update event path calculation for relatedTarget

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 ffb097caf6aeb668664fea63eed7c2e6dcb97828..1fdb6af7ccde04e444c48f450b542e6aa2cc20b3 100644
--- a/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
+++ b/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
@@ -51,11 +51,11 @@ static LayoutSize contentsScrollOffset(AbstractView* abstractView)
     return LayoutSize(frameView->scrollX() / scaleFactor, frameView->scrollY() / scaleFactor);
 }
 
-MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType, bool canBubble, bool cancelable, EventTarget* relatedTarget,
+MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType, bool canBubble, bool cancelable,
     AbstractView* abstractView, int detail, const IntPoint& screenLocation,
     const IntPoint& rootFrameLocation, const IntPoint& movementDelta, PlatformEvent::Modifiers modifiers,
     double platformTimeStamp, PositionType positionType, InputDeviceCapabilities* sourceCapabilities)
-    : UIEventWithKeyState(eventType, canBubble, cancelable, relatedTarget, abstractView, detail, modifiers, platformTimeStamp, sourceCapabilities)
+    : UIEventWithKeyState(eventType, canBubble, cancelable, abstractView, detail, modifiers, platformTimeStamp, sourceCapabilities)
     , m_screenLocation(screenLocation)
     , m_movementDelta(movementDelta)
     , m_positionType(positionType)