Remove DelayBasedTimeSourceHighRes Class altogether

cc/scheduler/begin_frame_source.cc

 // Copyright 2014 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 "cc/scheduler/begin_frame_source.h"
 
 #include "base/auto_reset.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 192 matching lines @@
   BeginFrameSourceMixIn::AsValueInto(dict);
   dict->SetBoolean("send_begin_frame_posted_", send_begin_frame_posted_);
 }
 
 // SyntheticBeginFrameSource ---------------------------------------------
 scoped_ptr<SyntheticBeginFrameSource> SyntheticBeginFrameSource::Create(
     base::SingleThreadTaskRunner* task_runner,
     base::TimeTicks initial_vsync_timebase,
     base::TimeDelta initial_vsync_interval) {
   scoped_refptr<DelayBasedTimeSource> time_source;
-  if (base::TimeTicks::IsHighResolution()) {
-    time_source = DelayBasedTimeSourceHighRes::Create(initial_vsync_interval,
-                                                      task_runner);
-  } else {
-    time_source =
-        DelayBasedTimeSource::Create(initial_vsync_interval, task_runner);
-  }
-
+  time_source =
+      DelayBasedTimeSource::Create(initial_vsync_interval, task_runner);
   return make_scoped_ptr(new SyntheticBeginFrameSource(time_source));
 }
 
 SyntheticBeginFrameSource::SyntheticBeginFrameSource(
     scoped_refptr<DelayBasedTimeSource> time_source)
     : BeginFrameSourceMixIn(), time_source_(time_source) {
   time_source_->SetActive(false);
   time_source_->SetClient(this);
 }
 
@@ skipping 237 matching lines @@
   if (!observer_->LastUsedBeginFrameArgs().IsValid())
     return true;
 
   // Only allow new args have a *strictly bigger* frame_time value and statisfy
   // minimum interval requirement.
   return (args.frame_time >=
           observer_->LastUsedBeginFrameArgs().frame_time + minimum_interval_);
 }
 
 }  // namespace cc