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

components/scheduler/renderer/idle_time_estimator_unittest.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/idle_time_estimator.h"
 
 #include "base/test/simple_test_tick_clock.h"
 #include "cc/test/ordered_simple_task_runner.h"
 #include "components/scheduler/base/task_queue_manager.h"
 #include "components/scheduler/base/test_time_source.h"
-#include "components/scheduler/child/scheduler_task_runner_delegate_for_test.h"
+#include "components/scheduler/child/scheduler_tqm_delegate_for_test.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace scheduler {
 
 class IdleTimeEstimatorForTest : public IdleTimeEstimator {
  public:
   IdleTimeEstimatorForTest(
       const scoped_refptr<TaskQueue>& compositor_task_runner,
-      base::SimpleTestTickClock* clock,
+      TestTimeSource* test_time_source,
       int sample_count,
       double estimation_percentile)
       : IdleTimeEstimator(compositor_task_runner,
+                          test_time_source,
                           sample_count,
-                          estimation_percentile) {
-    SetTimeSourceForTesting(make_scoped_ptr(new TestTimeSource(clock)));
-  }
+                          estimation_percentile) {}
 };
 
 class IdleTimeEstimatorTest : public testing::Test {
  public:
   IdleTimeEstimatorTest()
       : frame_length_(base::TimeDelta::FromMilliseconds(16)) {}
 
   ~IdleTimeEstimatorTest() override {}
 
   void SetUp() override {
     clock_.reset(new base::SimpleTestTickClock());
     clock_->Advance(base::TimeDelta::FromMicroseconds(5000));
+    test_time_source_.reset(new TestTimeSource(clock_.get()));
     mock_task_runner_ = make_scoped_refptr(
         new cc::OrderedSimpleTaskRunner(clock_.get(), false));
-    main_task_runner_ =
-        SchedulerTaskRunnerDelegateForTest::Create(mock_task_runner_);
+    main_task_runner_ = SchedulerTqmDelegateForTest::Create(
+        mock_task_runner_, make_scoped_ptr(new TestTimeSource(clock_.get())));
     manager_ = make_scoped_ptr(new TaskQueueManager(
         main_task_runner_, "test.scheduler", "test.scheduler",
         "test.scheduler.debug"));
     compositor_task_runner_ =
         manager_->NewTaskQueue(TaskQueue::Spec("compositor_tq"));
-    estimator_.reset(new IdleTimeEstimatorForTest(compositor_task_runner_,
-                                                  clock_.get(), 10, 50));
+    estimator_.reset(new IdleTimeEstimatorForTest(
+        compositor_task_runner_, test_time_source_.get(), 10, 50));
   }
 
   void SimulateFrameWithOneCompositorTask(int compositor_time) {
     base::TimeDelta non_idle_time =
         base::TimeDelta::FromMilliseconds(compositor_time);
     base::PendingTask task(FROM_HERE, base::Closure());
     estimator_->WillProcessTask(task);
     clock_->Advance(non_idle_time);
     estimator_->DidCommitFrameToCompositor();
     estimator_->DidProcessTask(task);
@@ skipping 15 matching lines @@
     estimator_->WillProcessTask(task);
     clock_->Advance(non_idle_time2);
     estimator_->DidCommitFrameToCompositor();
     estimator_->DidProcessTask(task);
 
     base::TimeDelta idle_time = frame_length_ - non_idle_time1 - non_idle_time2;
     clock_->Advance(idle_time);
   }
 
   scoped_ptr<base::SimpleTestTickClock> clock_;
+  scoped_ptr<TestTimeSource> test_time_source_;
   scoped_refptr<cc::OrderedSimpleTaskRunner> mock_task_runner_;
-  scoped_refptr<SchedulerTaskRunnerDelegate> main_task_runner_;
+  scoped_refptr<SchedulerTqmDelegate> main_task_runner_;
   scoped_ptr<TaskQueueManager> manager_;
   scoped_refptr<TaskQueue> compositor_task_runner_;
   scoped_ptr<IdleTimeEstimatorForTest> estimator_;
   const base::TimeDelta frame_length_;
 };
 
 TEST_F(IdleTimeEstimatorTest, InitialTimeEstimateWithNoData) {
   EXPECT_EQ(frame_length_, estimator_->GetExpectedIdleDuration(frame_length_));
 }
 
@@ skipping 57 matching lines @@
   SimulateFrameWithTwoCompositorTasks(4, 4);
   estimator_->DidCommitFrameToCompositor();
   estimator_->DidProcessTask(task);
 
   EXPECT_EQ(base::TimeDelta::FromMilliseconds(11),
             estimator_->GetExpectedIdleDuration(frame_length_));
 }
 
 
 }  // namespace scheduler