Move cc/debug/latency_info to ui/base.

cc/debug/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 CC_DEBUG_LATENCY_INFO_H_
-#define CC_DEBUG_LATENCY_INFO_H_
-
-#include <map>
-#include <utility>
-
-#include "base/basictypes.h"
-#include "base/time.h"
-#include "cc/base/cc_export.h"
-
-namespace cc {
-
-enum LatencyComponentType {
-  kRendererMainThread,
-  kRendererImplThread,
-  kBrowserMainThread,
-  kBrowserImplThread,
-  kInputEvent,
-};
-
-struct CC_EXPORT LatencyInfo {
-  struct LatencyComponent {
-    // Nondecreasing number that can be used to determine what events happened
-    // in the component at the time this struct was sent on to the next
-    // component.
-    int64 sequence_number;
-    // Average time of events that happened in this component.
-    base::TimeTicks event_time;
-    // Count of events that happened in this component
-    uint32 event_count;
-  };
-
-  // Map a Latency Component (with a component-specific int64 id) to a
-  // component info.
-  typedef std::map<std::pair<LatencyComponentType, int64>, LatencyComponent>
-      LatencyMap;
-
-  LatencyMap latency_components;
-
-  // This represents the final time that a frame is displayed it.
-  base::TimeTicks swap_timestamp;
-
-  LatencyInfo();
-
-  ~LatencyInfo();
-
-  void MergeWith(const LatencyInfo& other);
-
-  void AddLatencyNumber(LatencyComponentType component, int64 id,
-                        int64 component_sequence_number);
-  void AddLatencyNumberWithTimestamp(LatencyComponentType component,
-                                     int64 id, int64 component_sequence_number,
-                                     base::TimeTicks time,
-                                     uint32 event_count);
-
-  void Clear();
-};
-
-}  // namespace cc
-
-#endif  // CC_DEBUG_LATENCY_INFO_H_
-