Remove DelayBasedTimeSourceHighRes Class altogether

cc/scheduler/delay_based_time_source.cc

Index: cc/scheduler/delay_based_time_source.cc
diff --git a/cc/scheduler/delay_based_time_source.cc b/cc/scheduler/delay_based_time_source.cc
index ef43524a878288d72e4b89a5fdf6ce485fc18e33..f9c06ea044c867dcba867b26ef237cb7e9f345bc 100644
--- a/cc/scheduler/delay_based_time_source.cc
+++ b/cc/scheduler/delay_based_time_source.cc
@@ -37,27 +37,6 @@ static const double kPhaseChangeThreshold = 0.25;
 
 // The following methods correspond to the DelayBasedTimeSource that uses
 // the base::TimeTicks::Now as the timebase.
-scoped_refptr<DelayBasedTimeSourceHighRes> DelayBasedTimeSourceHighRes::Create(
-    base::TimeDelta interval,
-    base::SingleThreadTaskRunner* task_runner) {
-  return make_scoped_refptr(
-      new DelayBasedTimeSourceHighRes(interval, task_runner));
-}
-
-DelayBasedTimeSourceHighRes::DelayBasedTimeSourceHighRes(
-    base::TimeDelta interval,
-    base::SingleThreadTaskRunner* task_runner)
-    : DelayBasedTimeSource(interval, task_runner) {
-}
-
-DelayBasedTimeSourceHighRes::~DelayBasedTimeSourceHighRes() {}
-
-base::TimeTicks DelayBasedTimeSourceHighRes::Now() const {
-  return base::TimeTicks::Now();
-}
-
-// The following methods correspond to the DelayBasedTimeSource that uses
-// the base::TimeTicks::Now as the timebase.
 scoped_refptr<DelayBasedTimeSource> DelayBasedTimeSource::Create(
     base::TimeDelta interval,
     base::SingleThreadTaskRunner* task_runner) {
@@ -272,10 +251,6 @@ std::string DelayBasedTimeSource::TypeString() const {
   return "DelayBasedTimeSource";
 }
 
-std::string DelayBasedTimeSourceHighRes::TypeString() const {
-  return "DelayBasedTimeSourceHighRes";
-}
-
 void DelayBasedTimeSource::AsValueInto(
     base::trace_event::TracedValue* state) const {
   state->SetString("type", TypeString());