Create MouseEventManager and EventHandlingUtil

third_party/WebKit/Source/core/input/ScrollManager.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/ScrollManager.h"
 
 #include "core/dom/DOMNodeIds.h"
 #include "core/events/GestureEvent.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/TopControls.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/input/EventHandler.h"
+#include "core/input/EventHandlingUtil.h"
 #include "core/layout/LayoutPart.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/page/AutoscrollController.h"
 #include "core/page/Page.h"
 #include "core/page/scrolling/OverscrollController.h"
 #include "core/page/scrolling/RootScrollerController.h"
 #include "core/page/scrolling/ScrollState.h"
 #include "core/paint/PaintLayer.h"
 #include "platform/PlatformGestureEvent.h"
 #include "wtf/PtrUtil.h"
 #include <memory>
 
 
 namespace blink {
 
 ScrollManager::ScrollManager(LocalFrame* frame)
 : m_frame(frame)
 {
     clear();
 }
 
-ScrollManager::~ScrollManager()
-{
-}
-
 void ScrollManager::clear()
 {
     m_lastGestureScrollOverWidget = false;
     m_scrollbarHandlingScrollGesture = nullptr;
     m_resizeScrollableArea = nullptr;
     m_offsetFromResizeCorner = LayoutSize();
     clearGestureScrollState();
 }
 
 void ScrollManager::clearGestureScrollState()
@@ skipping 348 matching lines @@
 
     if (eventTarget) {
         if (handleScrollGestureOnResizer(eventTarget, gestureEvent))
             return WebInputEventResult::HandledSuppressed;
 
         GestureEvent* gestureDomEvent = GestureEvent::create(eventTarget->document().domWindow(), gestureEvent);
         if (gestureDomEvent) {
             DispatchEventResult gestureDomEventResult = eventTarget->dispatchEvent(gestureDomEvent);
             if (gestureDomEventResult != DispatchEventResult::NotCanceled) {
                 DCHECK(gestureDomEventResult != DispatchEventResult::CanceledByEventHandler);
-                return EventHandler::toWebInputEventResult(gestureDomEventResult);
+                return EventHandlingUtil::toWebInputEventResult(gestureDomEventResult);
             }
         }
     }
 
     switch (gestureEvent.type()) {
     case PlatformEvent::GestureScrollBegin:
         return handleGestureScrollBegin(gestureEvent);
     case PlatformEvent::GestureScrollUpdate:
         return handleGestureScrollUpdate(gestureEvent);
     case PlatformEvent::GestureScrollEnd:
@@ skipping 86 matching lines @@
 DEFINE_TRACE(ScrollManager)
 {
     visitor->trace(m_frame);
     visitor->trace(m_scrollGestureHandlingNode);
     visitor->trace(m_previousGestureScrolledNode);
     visitor->trace(m_scrollbarHandlingScrollGesture);
     visitor->trace(m_resizeScrollableArea);
 }
 
 } // namespace blink