Create MouseEventManager and EventHandlingUtil

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

+// 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.
+
+#ifndef EventHandlingUtil_h
+#define EventHandlingUtil_h
+
+#include "core/frame/LocalFrame.h"
+#include "core/layout/HitTestResult.h"
+#include "platform/geometry/LayoutPoint.h"
+#include "public/platform/WebInputEventResult.h"
+
+namespace blink {
+
+namespace EventHandlingUtil {
+
+class BoundaryEventDispatcher {
+public:
+    DEFINE_INLINE_VIRTUAL_TRACE() {}
+    virtual void dispatchOut(EventTarget*, EventTarget* relatedTarget) = 0;
+    virtual void dispatchOver(EventTarget*, EventTarget* relatedTarget) = 0;
+    virtual void dispatchLeave(EventTarget*, EventTarget* relatedTarget, bool checkForListener) = 0;
+    virtual void dispatchEnter(EventTarget*, EventTarget* relatedTarget, bool checkForListener) = 0;
+};
+
+HitTestResult hitTestResultInFrame(LocalFrame*, const LayoutPoint&,
+    HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly
+        | HitTestRequest::Active);
+
+WebInputEventResult mergeEventResult(
+    WebInputEventResult resultA, WebInputEventResult resultB);
+WebInputEventResult toWebInputEventResult(DispatchEventResult);
+
+void sendBoundaryEvents(
+    EventTarget* exitedTarget,
+    EventTarget* enteredTarget,
+    BoundaryEventDispatcher*);
+
+} // namespace EventHandlingUtil
+
+} // namespace blink
+
+#endif // EventHandlingUtil_h