Revert 175233 because Linux ASAN builder cannot compile it.

ppapi/shared_impl/ppb_trace_event_impl.h

-// Copyright (c) 2012 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 PPAPI_SHARED_IMPL_PPB_TRACE_EVENT_IMPL_H_
-#define PPAPI_SHARED_IMPL_PPB_TRACE_EVENT_IMPL_H_
-
-#include "ppapi/c/dev/ppb_trace_event_dev.h"
-#include "ppapi/c/pp_bool.h"
-#include "ppapi/shared_impl/ppapi_shared_export.h"
-
-namespace ppapi {
-
-// Contains the implementation of the PPB_Trace_Event_Dev functions. Since these
-// functions are to be run from whatever plugin process/thread in which they
-// originated, the implementation lives in shared_impl.
-//
-class PPAPI_SHARED_EXPORT TraceEventImpl {
- public:
-  static void* GetCategoryEnabled(const char* category_name);
-  static void AddTraceEvent(int8_t phase,
-                               const void* category_enabled,
-                               const char* name,
-                               uint64_t id,
-                               uint32_t num_args,
-                               const char* arg_names[],
-                               const uint8_t arg_types[],
-                               const uint64_t arg_values[],
-                               uint8_t flags);
-  static void SetThreadName(const char* thread_name);
-};
-
-}  // namespace ppapi
-
-#endif  // PPAPI_SHARED_IMPL_PPB_TRACE_EVENT_IMPL_H_