Move //mojo/services tracing & catalog to //services

mojo/services/tracing/trace_data_sink.h

-// 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.
-
-#ifndef MOJO_SERVICES_TRACING_TRACE_DATA_SINK_H_
-#define MOJO_SERVICES_TRACING_TRACE_DATA_SINK_H_
-
-#include <string>
-
-#include "base/macros.h"
-#include "mojo/public/cpp/system/data_pipe.h"
-
-namespace tracing {
-
-class TraceDataSink {
- public:
-  explicit TraceDataSink(mojo::ScopedDataPipeProducerHandle pipe);
-  ~TraceDataSink();
-
-  void AddChunk(const std::string& json);
-
- private:
-  mojo::ScopedDataPipeProducerHandle pipe_;
-  bool empty_;
-
-  DISALLOW_COPY_AND_ASSIGN(TraceDataSink);
-};
-
-}  // namespace tracing
-
-#endif  // MOJO_SERVICES_TRACING_TRACE_DATA_SINK_H_