Use swap-promise to improve first* paint times

cc/BUILD.gn

 # Copyright 2014 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.
 
 import("//cc/cc.gni")
 import("//gpu/vulkan/features.gni")
 
 cc_component("cc") {
   sources = [
     "benchmarks/benchmark_instrumentation.cc",
@@ skipping 182 matching lines @@
     "output/overlay_strategy_single_on_top.cc",
     "output/overlay_strategy_single_on_top.h",
     "output/overlay_strategy_underlay.cc",
     "output/overlay_strategy_underlay.h",
     "output/overlay_strategy_underlay_cast.cc",
     "output/overlay_strategy_underlay_cast.h",
     "output/program_binding.cc",
     "output/program_binding.h",
     "output/renderer_settings.cc",
     "output/renderer_settings.h",
+    "output/report_time_swap_promise.cc",
+    "output/report_time_swap_promise.h",
     "output/shader.cc",
     "output/shader.h",
     "output/software_output_device.cc",
     "output/software_output_device.h",
     "output/software_renderer.cc",
     "output/software_renderer.h",
     "output/static_geometry_binding.cc",
     "output/static_geometry_binding.h",
     "output/swap_promise.h",
     "output/texture_mailbox_deleter.cc",
@@ skipping 750 matching lines @@
   data = [
     "test/data/",
 
     # Needed for isolate script to execute.
     "//testing/scripts/common.py",
     "//testing/xvfb.py",
     "//testing/scripts/run_gtest_perf_test.py",
     "//tools/perf/generate_legacy_perf_dashboard_json.py",
   ]
 }