Scheduler/child/TimeSource could be replaced with base/time/DefaultTickClock.

components/scheduler/child/test_time_source.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/child/test_time_source.h"
 
 #include "cc/test/test_now_source.h"
 
 namespace scheduler {
 
 TestTimeSource::TestTimeSource(scoped_refptr<cc::TestNowSource> time_source)
     : time_source_(time_source) {
 }
 
 TestTimeSource::~TestTimeSource() {
 }
 
-base::TimeTicks TestTimeSource::Now() const {
+base::TimeTicks TestTimeSource::NowTicks() {
   return time_source_->Now();
 }
 
 }  // namespace scheduler