Fix computation of runtime for throttled tasks

components/scheduler/BUILD.gn

 # Copyright 2015 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.
 
 # GYP version: components/scheduler.gypi:scheduler
 component("scheduler") {
   sources = [
     "base/cancelable_closure_holder.cc",
     "base/cancelable_closure_holder.h",
     "base/enqueue_order.cc",
@@ skipping 56 matching lines @@
     "renderer/render_widget_signals.cc",
     "renderer/render_widget_signals.h",
     "renderer/renderer_scheduler.cc",
     "renderer/renderer_scheduler.h",
     "renderer/renderer_scheduler_impl.cc",
     "renderer/renderer_scheduler_impl.h",
     "renderer/renderer_web_scheduler_impl.cc",
     "renderer/renderer_web_scheduler_impl.h",
     "renderer/task_cost_estimator.cc",
     "renderer/task_cost_estimator.h",
+    "renderer/throttled_time_domain.cc",
+    "renderer/throttled_time_domain.h",
     "renderer/throttling_helper.cc",
     "renderer/throttling_helper.h",
     "renderer/user_model.cc",
     "renderer/user_model.h",
     "renderer/web_frame_scheduler_impl.cc",
     "renderer/web_frame_scheduler_impl.h",
     "renderer/web_view_scheduler_impl.cc",
     "renderer/web_view_scheduler_impl.h",
     "renderer/webthread_impl_for_renderer_scheduler.cc",
     "renderer/webthread_impl_for_renderer_scheduler.h",
@@ skipping 75 matching lines @@
   sources = [
     "test/lazy_scheduler_message_loop_delegate_for_tests.cc",
     "test/lazy_scheduler_message_loop_delegate_for_tests.h",
   ]
 
   public_deps = [
     ":scheduler",
     "//base",
   ]
 }