Move some interfaces from content/port to internal content since they're not referenced in content/…

content/port/browser/event_with_latency_info.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_PORT_BROWSER_EVENT_WITH_LATENCY_INFO_H_
-#define CONTENT_PORT_BROWSER_EVENT_WITH_LATENCY_INFO_H_
-
-#include "ui/events/latency_info.h"
-
-#include "content/common/input/web_input_event_traits.h"
-
-namespace blink {
-class WebGestureEvent;
-class WebMouseEvent;
-class WebMouseWheelEvent;
-class WebTouchEvent;
-}
-
-namespace content {
-
-template <typename T>
-class EventWithLatencyInfo {
- public:
-  T event;
-  ui::LatencyInfo latency;
-
-  EventWithLatencyInfo(const T& e, const ui::LatencyInfo& l)
-      : event(e), latency(l) {}
-
-  EventWithLatencyInfo() {}
-
-  bool CanCoalesceWith(const EventWithLatencyInfo& other)
-      const WARN_UNUSED_RESULT {
-    return WebInputEventTraits::CanCoalesce(other.event, event);
-  }
-
-  void CoalesceWith(const EventWithLatencyInfo& other) {
-    WebInputEventTraits::Coalesce(other.event, &event);
-    // When coalescing two input events, we keep the oldest LatencyInfo
-    // for Telemetry latency test since it will represent the longest
-    // latency.
-    if (other.latency.trace_id >= 0 &&
-        (latency.trace_id < 0 || other.latency.trace_id < latency.trace_id))
-      latency = other.latency;
-  }
-};
-
-typedef EventWithLatencyInfo<blink::WebGestureEvent>
-    GestureEventWithLatencyInfo;
-typedef EventWithLatencyInfo<blink::WebMouseWheelEvent>
-    MouseWheelEventWithLatencyInfo;
-typedef EventWithLatencyInfo<blink::WebMouseEvent>
-    MouseEventWithLatencyInfo;
-typedef EventWithLatencyInfo<blink::WebTouchEvent>
-    TouchEventWithLatencyInfo;
-
-}  // namespace content
-
-#endif  // CONTENT_PORT_BROWSER_EVENT_WITH_LATENCY_INFO_H_