WIP: Plumbing input event latency reporting through Mus GPU.

ui/events/mojo/latency_info_struct_traits.h

 // Copyright 2016 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 UI_EVENTS_MOJO_LATENCY_INFO_STRUCT_TRAITS_H_
 #define UI_EVENTS_MOJO_LATENCY_INFO_STRUCT_TRAITS_H_
 
 #include "ui/events/latency_info.h"
 #include "ui/events/mojo/latency_info.mojom-shared.h"
 #include "ui/gfx/geometry/mojo/geometry_struct_traits.h"
@@ skipping 28 matching lines @@
 
 template <>
 struct StructTraits<ui::mojom::LatencyComponentDataView,
                     ui::LatencyInfo::LatencyComponent> {
   static int64_t sequence_number(
       const ui::LatencyInfo::LatencyComponent& component);
   static base::TimeTicks event_time(
       const ui::LatencyInfo::LatencyComponent& component);
   static uint32_t event_count(
       const ui::LatencyInfo::LatencyComponent& component);
+  static base::TimeTicks first_event_time(
+      const ui::LatencyInfo::LatencyComponent& component);
+  static base::TimeTicks last_event_time(
+      const ui::LatencyInfo::LatencyComponent& component);
   static bool Read(ui::mojom::LatencyComponentDataView data,
                    ui::LatencyInfo::LatencyComponent* out);
 };
 
 template <>
 struct StructTraits<ui::mojom::LatencyComponentPairDataView,
                     ui::LatencyInfo::LatencyMap::value_type> {
   static const std::pair<ui::LatencyComponentType, int64_t>& key(
       const ui::LatencyInfo::LatencyMap::value_type& input) {
     return input.first;
@@ skipping 26 matching lines @@
   static InputCoordinateArray input_coordinates(const ui::LatencyInfo& info);
   static int64_t trace_id(const ui::LatencyInfo& info);
   static bool coalesced(const ui::LatencyInfo& info);
   static bool terminated(const ui::LatencyInfo& info);
   static bool Read(ui::mojom::LatencyInfoDataView data, ui::LatencyInfo* out);
 };
 
 }  // namespace mojo
 
 #endif  // UI_EVENTS_MOJO_LATENCY_INFO_STRUCT_TRAITS_H_