Revert "Add option to export tracing events to ETW."

base/trace_event/trace_event_etw_export_win.h

Index: base/trace_event/trace_event_etw_export_win.h
diff --git a/base/trace_event/trace_event_etw_export_win.h b/base/trace_event/trace_event_etw_export_win.h
deleted file mode 100644
index 73a9d89ccdf84d934845e6456126d14f3ed0e871..0000000000000000000000000000000000000000
--- a/base/trace_event/trace_event_etw_export_win.h
+++ /dev/null
@@ -1,66 +0,0 @@
-// Copyright (c) 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.
-
-// This file contains the Windows-specific exporting to ETW.
-#ifndef BASE_TRACE_EVENT_TRACE_ETW_EXPORT_H_
-#define BASE_TRACE_EVENT_TRACE_ETW_EXPORT_H_
-
-#include "base/base_export.h"
-#include "base/trace_event/trace_event_impl.h"
-
-// Fwd.
-template <typename Type>
-struct StaticMemorySingletonTraits;
-
-namespace base {
-namespace trace_event {
-
-class BASE_EXPORT TraceEventETWExport {
- public:
-  ~TraceEventETWExport();
-
-  // Retrieves the singleton.
-  // Note that this may return NULL post-AtExit processing.
-  static TraceEventETWExport* GetInstance();
-
-  static void EnableETWExport();
-  static void DisableETWExport();
-
-  static bool isETWExportEnabled() { return GetInstance()->ETWExportEnabled_; }
-
-  static void AddEvent(
-      char phase,
-      const unsigned char* category_group_enabled,
-      const char* name,
-      unsigned long long id,
-      int num_args,
-      const char** arg_names,
-      const unsigned char* arg_types,
-      const unsigned long long* arg_values,
-      const scoped_refptr<ConvertableToTraceFormat>* convertable_values);
-
-  static void AddCustomEvent(const char* name,
-                             char const* phase,
-                             const char* arg_name_1,
-                             const char* arg_value_1,
-                             const char* arg_name_2,
-                             const char* arg_value_2,
-                             const char* arg_name_3,
-                             const char* arg_value_3);
-
-  void Resurrect();
-
- private:
-  bool ETWExportEnabled_;
-  // Ensure only the provider can construct us.
-  friend struct StaticMemorySingletonTraits<TraceEventETWExport>;
-  TraceEventETWExport();
-
-  DISALLOW_COPY_AND_ASSIGN(TraceEventETWExport);
-};
-
-}  // namespace trace_event
-}  // namespace base
-
-#endif  // BASE_TRACE_EVENT_TRACE_ETW_EXPORT_H_