Adds a flag to support "Virtual Time" to the blink scheduler

components/scheduler/renderer/renderer_scheduler_impl_unittest.cc

Index: components/scheduler/renderer/renderer_scheduler_impl_unittest.cc
diff --git a/components/scheduler/renderer/renderer_scheduler_impl_unittest.cc b/components/scheduler/renderer/renderer_scheduler_impl_unittest.cc
index 7e339c2169f1505e38b342d1cd322691becd01f4..9a5c1e3d3e41366ee5f62a37196db41bdbad945b 100644
--- a/components/scheduler/renderer/renderer_scheduler_impl_unittest.cc
+++ b/components/scheduler/renderer/renderer_scheduler_impl_unittest.cc
@@ -179,7 +179,9 @@ class RendererSchedulerImplForTest : public RendererSchedulerImpl {
 
   RendererSchedulerImplForTest(
       scoped_refptr<SchedulerTaskRunnerDelegate> main_task_runner)
-      : RendererSchedulerImpl(main_task_runner), update_policy_count_(0) {}
+      : RendererSchedulerImpl(main_task_runner,
+                              RendererSchedulerImpl::TimeSource::NORMAL),
+        update_policy_count_(0) {}
 
   void UpdatePolicyLocked(UpdateType update_type) override {
     update_policy_count_++;
@@ -236,13 +238,14 @@ class RendererSchedulerImplTest : public testing::Test {
 
   void SetUp() override {
     if (message_loop_) {
-      main_task_runner_ =
-          SchedulerTaskRunnerDelegateImpl::Create(message_loop_.get());
+      main_task_runner_ = SchedulerTaskRunnerDelegateImpl::Create(
+          message_loop_.get(),
+          make_scoped_ptr(new TestTimeSource(clock_.get())));
     } else {
       mock_task_runner_ = make_scoped_refptr(
           new cc::OrderedSimpleTaskRunner(clock_.get(), false));
-      main_task_runner_ =
-          SchedulerTaskRunnerDelegateForTest::Create(mock_task_runner_);
+      main_task_runner_ = SchedulerTaskRunnerDelegateForTest::Create(
+          mock_task_runner_, make_scoped_ptr(new TestTimeSource(clock_.get())));
     }
     Initialize(
         make_scoped_ptr(new RendererSchedulerImplForTest(main_task_runner_)));
@@ -255,19 +258,6 @@ class RendererSchedulerImplTest : public testing::Test {
     loading_task_runner_ = scheduler_->LoadingTaskRunner();
     idle_task_runner_ = scheduler_->IdleTaskRunner();
     timer_task_runner_ = scheduler_->TimerTaskRunner();
-    scheduler_->GetSchedulerHelperForTesting()->SetTimeSourceForTesting(
-        make_scoped_ptr(new TestTimeSource(clock_.get())));
-    scheduler_->GetSchedulerHelperForTesting()
-        ->GetTaskQueueManagerForTesting()
-        ->SetTimeSourceForTesting(
-            make_scoped_ptr(new TestTimeSource(clock_.get())));
-    scheduler_->GetLoadingTaskCostEstimatorForTesting()
-        ->SetTimeSourceForTesting(
-            make_scoped_ptr(new TestTimeSource(clock_.get())));
-    scheduler_->GetTimerTaskCostEstimatorForTesting()->SetTimeSourceForTesting(
-        make_scoped_ptr(new TestTimeSource(clock_.get())));
-    scheduler_->GetIdleTimeEstimatorForTesting()->SetTimeSourceForTesting(
-        make_scoped_ptr(new TestTimeSource(clock_.get())));
   }
 
   void TearDown() override {
@@ -1368,8 +1358,8 @@ class RendererSchedulerImplWithMockSchedulerTest
   void SetUp() override {
     mock_task_runner_ = make_scoped_refptr(
         new cc::OrderedSimpleTaskRunner(clock_.get(), false));
-    main_task_runner_ =
-        SchedulerTaskRunnerDelegateForTest::Create(mock_task_runner_);
+    main_task_runner_ = SchedulerTaskRunnerDelegateForTest::Create(
+        mock_task_runner_, make_scoped_ptr(new TestTimeSource(clock_.get())));
     mock_scheduler_ = new RendererSchedulerImplForTest(main_task_runner_);
     Initialize(make_scoped_ptr(mock_scheduler_));
   }