Record accuracy of expected queueing time metric.

ui/latency/latency_info.cc

 // 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.
 
 #include "ui/latency/latency_info.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 153 matching lines @@
                                   LatencyComponentType type) {
   for (const auto& lc : other.latency_components()) {
     if (lc.first.first == type) {
       AddLatencyNumberWithTimestamp(lc.first.first,
                                     lc.first.second,
                                     lc.second.sequence_number,
                                     lc.second.event_time,
                                     lc.second.event_count);
     }
   }
+
+  expected_queueing_time_on_dispatch_ =
+      other.expected_queueing_time_on_dispatch_;
 }
 
 void LatencyInfo::AddNewLatencyFrom(const LatencyInfo& other) {
   for (const auto& lc : other.latency_components()) {
     if (!FindLatency(lc.first.first, lc.first.second, NULL)) {
       AddLatencyNumberWithTimestamp(lc.first.first,
                                     lc.first.second,
                                     lc.second.sequence_number,
                                     lc.second.event_time,
                                     lc.second.event_count);
     }
   }
+
+  expected_queueing_time_on_dispatch_ =
+      other.expected_queueing_time_on_dispatch_;
 }
 
 void LatencyInfo::AddLatencyNumber(LatencyComponentType component,
                                    int64_t id,
                                    int64_t component_sequence_number) {
   AddLatencyNumberWithTimestampImpl(component, id, component_sequence_number,
                                     base::TimeTicks::Now(), 1, nullptr);
 }
 
 void LatencyInfo::AddLatencyNumberWithTraceName(
@@ skipping 160 matching lines @@
   LatencyMap::iterator it = latency_components_.begin();
   while (it != latency_components_.end()) {
     if (it->first.first == type)
       it = latency_components_.erase(it);
     else
       it++;
   }
 }
 
 }  // namespace ui