Delete the tracing service

services/tracing/recorder.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 "services/tracing/recorder.h"
-
-namespace tracing {
-
-Recorder::Recorder(mojom::RecorderRequest request, DataSink* sink)
-  : sink_(sink), binding_(this, std::move(request)) {}
-Recorder::~Recorder() {}
-
-void Recorder::TryRead() {
-  binding_.WaitForIncomingMethodCall(MojoDeadline(0));
-}
-
-mojo::Handle Recorder::RecorderHandle() const {
-  return binding_.handle();
-}
-
-void Recorder::Record(const std::string& json) {
-  sink_->AddChunk(json);
-}
-
-}  // namespace tracing