Report expected task queueing time via UMA

components/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("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//tools/grit/repack.gni")
 
 if (is_android) {
@@ skipping 465 matching lines @@
       sources += [ "printing/test/print_web_view_helper_browsertest.cc" ]
       deps += [ "//components/printing/test:test_support" ]
     }
   }
 
   test("components_perftests") {
     sources = [
       "scheduler/base/task_queue_manager_delegate_for_test.cc",
       "scheduler/base/task_queue_manager_delegate_for_test.h",
       "scheduler/base/task_queue_manager_perftest.cc",
+      "scheduler/base/test_task_time_tracker.h",
       "visitedlink/test/visitedlink_perftest.cc",
     ]
 
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
     deps = [
       "//base",
       "//base/test:test_support",
       "//base/test:test_support_perf",
       "//components/scheduler",
       "//components/visitedlink/browser",
       "//content/test:test_support",
       "//testing/gtest",
       "//testing/perf",
       "//url",
     ]
   }
 }