Extract more of the mouse logic from EventHandler

third_party/WebKit/Source/core/input/PointerEventManager.h

Index: third_party/WebKit/Source/core/input/PointerEventManager.h
diff --git a/third_party/WebKit/Source/core/input/PointerEventManager.h b/third_party/WebKit/Source/core/input/PointerEventManager.h
index 0239332cd9ef5721240cc37b171e32a43c050875..357c2c4e6e3ae437762fc62b650a27e1af87e4e6 100644
--- a/third_party/WebKit/Source/core/input/PointerEventManager.h
+++ b/third_party/WebKit/Source/core/input/PointerEventManager.h
@@ -33,30 +33,20 @@ public:
     // and sets the newNodeUnderMouse if the capturing is set
     // in this function.
     WebInputEventResult sendMousePointerEvent(
-        Node* target, const AtomicString& type,
-        int clickCount, const PlatformMouseEvent&,
-        Node* lastNodeUnderMouse,
-        Node** newNodeUnderMouse);
+        Node* target, const AtomicString& type, const PlatformMouseEvent&);
 
     WebInputEventResult handleTouchEvents(
         const PlatformTouchEvent&);
 
-    // Sends boundary events mouseout/leave/over/enter to the
-    // corresponding targets. This function sends pointerout/leave/over/enter
-    // only when isFrameBoundaryTransition is true which indicates the
-    // transition is over the document boundary and not only the elements border
-    // inside the document. If isFrameBoundaryTransition is false,
-    // then the event is a compatibility event like those created by touch
-    // and in that case the corresponding pointer events will be handled by
-    // sendTouchPointerEvent for example and there is no need to send pointer
-    // boundary events. Note that normal mouse events (e.g. mousemove/down/up)
+    // Sends boundary events pointerout/leave/over/enter and
+    // mouseout/leave/over/enter to the corresponding targets.
+    // inside the document. This functions handles the cases that pointer is
+    // leaving a frame. Note that normal mouse events (e.g. mousemove/down/up)
     // and their corresponding boundary events will be handled altogether by
     // sendMousePointerEvent function.
-    void sendMouseAndPossiblyPointerBoundaryEvents(
-        Node* exitedNode,
+    void sendMouseAndPointerBoundaryEvents(
         Node* enteredNode,
-        const PlatformMouseEvent&,
-        bool isFrameBoundaryTransition);
+        const PlatformMouseEvent&);
 
     // Resets the internal state of this object.
     void clear();
@@ -163,10 +153,8 @@ private:
     EventTarget* processCaptureAndPositionOfPointerEvent(
         PointerEvent*,
         EventTarget* hitTestTarget,
-        EventTarget* lastNodeUnderMouse = nullptr,
         const PlatformMouseEvent& = PlatformMouseEvent(),
-        bool sendMouseEvent = false,
-        bool setPointerPosition = true);
+        bool sendMouseEvent = false);
 
     void removeTargetFromPointerCapturingMapping(
         PointerCapturingMap&, const EventTarget*);