Refactoring button field and its type

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/input/PointerEventManager.h"
 
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/shadow/FlatTreeTraversal.h"
 #include "core/events/MouseEvent.h"
 #include "core/frame/FrameView.h"
@@ skipping 166 matching lines @@
     Node* exitedNode,
     Node* enteredNode,
     const PlatformMouseEvent& mouseEvent,
     bool isFrameBoundaryTransition)
 {
     // Mouse event type does not matter as this pointerevent will only be used
     // to create boundary pointer events and its type will be overridden in
     // |sendBoundaryEvents| function.
     PointerEvent* dummyPointerEvent =
         m_pointerEventFactory.create(EventTypeNames::mousedown, mouseEvent,
-        nullptr, m_frame->document()->domWindow());
+        m_frame->document()->domWindow());
 
     // TODO(crbug/545647): This state should reset with pointercancel too.
     // This function also gets called for compat mouse events of touch at this
     // stage. So if the event is not frame boundary transition it is only a
     // compatibility mouse event and we do not need to change pointer event
     // behavior regarding preventMouseEvent state in that case.
     if (isFrameBoundaryTransition && dummyPointerEvent->buttons() == 0
         && dummyPointerEvent->isPrimary()) {
         m_preventMouseEventForPointerType[toPointerTypeIndex(
             mouseEvent.pointerProperties().pointerType)] = false;
@@ skipping 313 matching lines @@
 
         removePointer(pointerEvent);
     }
 
     return result;
 }
 
 WebInputEventResult PointerEventManager::sendMousePointerEvent(
     Node* target, const AtomicString& mouseEventType,
     int clickCount, const PlatformMouseEvent& mouseEvent,
-    Node* relatedTarget,
     Node* lastNodeUnderMouse,
     Node** newNodeUnderMouse)
 {
     PointerEvent* pointerEvent =
         m_pointerEventFactory.create(mouseEventType, mouseEvent,
-        relatedTarget, m_frame->document()->domWindow());
+        m_frame->document()->domWindow());
 
     // This is for when the mouse is released outside of the page.
     if (pointerEvent->type() == EventTypeNames::pointermove
         && !pointerEvent->buttons()) {
 
         releasePointerCapture(pointerEvent->pointerId());
         // Send got/lostpointercapture rightaway if necessary.
         processPendingPointerCapture(pointerEvent);
 
         if (pointerEvent->isPrimary()) {
@@ skipping 267 matching lines @@
 {
     visitor->trace(m_frame);
     visitor->trace(m_nodeUnderPointer);
     visitor->trace(m_pointerCaptureTarget);
     visitor->trace(m_pendingPointerCaptureTarget);
     visitor->trace(m_touchEventManager);
 }
 
 
 } // namespace blink