Move |ScopedWebInputEvent| and |WebInputEventTraits| from |content::| to "ui/events/blink"

content/common/input/web_input_event_traits.h

-// Copyright 2013 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 CONTENT_COMMON_INPUT_WEB_INPUT_EVENT_TRAITS_H_
-#define CONTENT_COMMON_INPUT_WEB_INPUT_EVENT_TRAITS_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <string>
-
-#include "content/common/input/scoped_web_input_event.h"
-#include "third_party/WebKit/public/web/WebInputEvent.h"
-
-namespace content {
-
-// Utility class for performing operations on and with WebInputEvents.
-class CONTENT_EXPORT WebInputEventTraits {
- public:
-  static const char* GetName(blink::WebInputEvent::Type type);
-  static std::string ToString(const blink::WebInputEvent& event);
-  static size_t GetSize(blink::WebInputEvent::Type type);
-  static ScopedWebInputEvent Clone(const blink::WebInputEvent& event);
-  static void Delete(blink::WebInputEvent* event);
-  static bool ShouldBlockEventStream(const blink::WebInputEvent& event);
-
-  static bool CanCauseScroll(const blink::WebMouseWheelEvent& event);
-
-  // Return uniqueTouchEventId for WebTouchEvent, otherwise return 0.
-  static uint32_t GetUniqueTouchEventId(const blink::WebInputEvent& event);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_COMMON_INPUT_WEB_INPUT_EVENT_TRAITS_H_