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diff --git a/deps/v8/src/libplatform/tracing/perfetto-tracing-controller.h b/deps/v8/src/libplatform/tracing/perfetto-tracing-controller.h
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index 0000000000..67a3c26cef
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+++ b/deps/v8/src/libplatform/tracing/perfetto-tracing-controller.h
@@ -0,0 +1,86 @@
+// Copyright 2019 the V8 project 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 V8_LIBPLATFORM_TRACING_PERFETTO_TRACING_CONTROLLER_H_
+#define V8_LIBPLATFORM_TRACING_PERFETTO_TRACING_CONTROLLER_H_
+
+#include <atomic>
+#include <fstream>
+#include <memory>
+#include <vector>
+
+#include "src/base/platform/platform.h"
+#include "src/base/platform/semaphore.h"
+
+namespace perfetto {
+class TraceConfig;
+class TraceWriter;
+class TracingService;
+}  // namespace perfetto
+
+namespace v8 {
+namespace platform {
+namespace tracing {
+
+class PerfettoConsumer;
+class PerfettoProducer;
+class PerfettoTaskRunner;
+class TraceEventListener;
+
+// This is the top-level interface for performing tracing with perfetto. The
+// user of this class should call StartTracing() to start tracing, and
+// StopTracing() to stop it. To write trace events, the user can obtain a
+// thread-local TraceWriter object using GetOrCreateThreadLocalWriter().
+class PerfettoTracingController {
+ public:
+  PerfettoTracingController();
+
+  // Blocks and sets up all required data structures for tracing. It is safe to
+  // call GetOrCreateThreadLocalWriter() to obtain thread-local TraceWriters for
+  // writing trace events once this call returns. Tracing output will be sent to
+  // the TraceEventListeners registered via AddTraceEventListener().
+  void StartTracing(const ::perfetto::TraceConfig& trace_config);
+
+  // Blocks and finishes all existing AddTraceEvent tasks. Stops the tracing
+  // thread.
+  void StopTracing();
+
+  // Register a trace event listener that will receive trace events. This can be
+  // called multiple times to register multiple listeners, but must be called
+  // before starting tracing.
+  void AddTraceEventListener(TraceEventListener* listener);
+
+  ~PerfettoTracingController();
+
+  // Each thread that wants to trace should call this to get their TraceWriter.
+  // PerfettoTracingController creates and owns the TraceWriter.
+  ::perfetto::TraceWriter* GetOrCreateThreadLocalWriter();
+
+ private:
+  // Signals the producer_ready_semaphore_.
+  void OnProducerReady();
+
+  // PerfettoProducer is the only class allowed to call OnProducerReady().
+  friend class PerfettoProducer;
+
+  std::unique_ptr<::perfetto::TracingService> service_;
+  std::unique_ptr<PerfettoProducer> producer_;
+  std::unique_ptr<PerfettoConsumer> consumer_;
+  std::unique_ptr<PerfettoTaskRunner> task_runner_;
+  std::vector<TraceEventListener*> listeners_;
+  base::Thread::LocalStorageKey writer_key_;
+  // A semaphore that is signalled when StartRecording is called. StartTracing
+  // waits on this semaphore to be notified when the tracing service is ready to
+  // receive trace events.
+  base::Semaphore producer_ready_semaphore_;
+  base::Semaphore consumer_finished_semaphore_;
+
+  DISALLOW_COPY_AND_ASSIGN(PerfettoTracingController);
+};
+
+}  // namespace tracing
+}  // namespace platform
+}  // namespace v8
+
+#endif  // V8_LIBPLATFORM_TRACING_PERFETTO_TRACING_CONTROLLER_H_