Deleting the copresence API.

components/copresence/handlers/audio/tick_clock_ref_counted.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 "components/copresence/handlers/audio/tick_clock_ref_counted.h"
-
-#include <utility>
-
-#include "base/memory/ptr_util.h"
-#include "base/time/tick_clock.h"
-
-namespace copresence {
-
-TickClockRefCounted::TickClockRefCounted(std::unique_ptr<base::TickClock> clock)
-    : clock_(std::move(clock)) {}
-
-TickClockRefCounted::TickClockRefCounted(base::TickClock* clock)
-    : clock_(base::WrapUnique(clock)) {}
-
-base::TimeTicks TickClockRefCounted::NowTicks() const {
-  return clock_->NowTicks();
-}
-
-TickClockRefCounted::~TickClockRefCounted() {}
-
-}  // namespace copresence