[Reland] Per WebViewScheduler virtual time

components/scheduler/renderer/webthread_impl_for_renderer_scheduler.cc

 // 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.
 
 #include "components/scheduler/renderer/webthread_impl_for_renderer_scheduler.h"
 
 #include "components/scheduler/base/task_queue.h"
 #include "components/scheduler/child/web_task_runner_impl.h"
 #include "components/scheduler/renderer/renderer_scheduler_impl.h"
 #include "components/scheduler/renderer/renderer_web_scheduler_impl.h"
@@ skipping 28 matching lines @@
 
 SingleThreadIdleTaskRunner* WebThreadImplForRendererScheduler::IdleTaskRunner()
     const {
   return idle_task_runner_.get();
 }
 
 blink::WebTaskRunner* WebThreadImplForRendererScheduler::taskRunner() {
   return web_task_runner_.get();
 }
 
+double WebThreadImplForRendererScheduler::virtualTimeSeconds() {
+  return scheduler_->VirtualTimeSeconds();
+}
+
+double
+WebThreadImplForRendererScheduler::monotonicallyIncreasingVirtualTimeSeconds() {
+  return scheduler_->MonotonicallyIncreasingVirtualTimeSeconds();
+}
+
 void WebThreadImplForRendererScheduler::AddTaskObserverInternal(
     base::MessageLoop::TaskObserver* observer) {
   scheduler_->AddTaskObserver(observer);
 }
 
 void WebThreadImplForRendererScheduler::RemoveTaskObserverInternal(
     base::MessageLoop::TaskObserver* observer) {
   scheduler_->RemoveTaskObserver(observer);
 }
 
 }  // namespace scheduler