Move cc/debug/latency_info to ui/base.

cc/debug/latency_info.cc

-// Copyright (c) 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.
-
-#include "cc/debug/latency_info.h"
-
-#include <algorithm>
-
-namespace cc {
-
-LatencyInfo::LatencyInfo() {
-}
-
-LatencyInfo::~LatencyInfo() {
-}
-
-void LatencyInfo::MergeWith(const LatencyInfo& other) {
-  for (LatencyMap::const_iterator b = other.latency_components.begin();
-      b != other.latency_components.end(); ++b) {
-    AddLatencyNumberWithTimestamp(b->first.first, b->first.second,
-                                  b->second.sequence_number,
-                                  b->second.event_time,
-                                  b->second.event_count);
-  }
-}
-
-void LatencyInfo::AddLatencyNumber(LatencyComponentType component,
-                                   int64 id, int64 component_sequence_number) {
-  AddLatencyNumberWithTimestamp(component, id, component_sequence_number,
-                                base::TimeTicks::Now(), 1);
-}
-
-void LatencyInfo::AddLatencyNumberWithTimestamp(
-    LatencyComponentType component, int64 id, int64 component_sequence_number,
-    base::TimeTicks time, uint32 event_count) {
-  LatencyMap::key_type key = std::make_pair(component, id);
-  LatencyMap::iterator f = latency_components.find(key);
-  if (f == latency_components.end()) {
-    LatencyComponent info = {component_sequence_number, time, event_count};
-    latency_components[key] = info;
-  } else {
-    f->second.sequence_number = std::max(component_sequence_number,
-                                         f->second.sequence_number);
-    uint32 new_count = event_count + f->second.event_count;
-    if (event_count > 0 && new_count != 0) {
-      // Do a weighted average, so that the new event_time is the average of
-      // the times of events currently in this structure with the time passed
-      // into this method.
-      f->second.event_time += (time - f->second.event_time) * event_count /
-          new_count;
-      f->second.event_count = new_count;
-    }
-  }
-}
-
-void LatencyInfo::Clear() {
-  latency_components.clear();
-}
-
-}  // namespace cc
-