Reland: Add trace event Pepper API

base/debug/trace_event.cc

-// 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.
-
-#include "base/debug/trace_event.h"
-
-namespace trace_event_internal {
-
-void TraceEndOnScopeClose::Initialize(const unsigned char* category_enabled,
-                                      const char* name) {
-  data_.category_enabled = category_enabled;
-  data_.name = name;
-  p_data_ = &data_;
-}
-
-void TraceEndOnScopeClose::AddEventIfEnabled() {
-  // Only called when p_data_ is non-null.
-  if (*p_data_->category_enabled) {
-    TRACE_EVENT_API_ADD_TRACE_EVENT(
-        TRACE_EVENT_PHASE_END,
-        p_data_->category_enabled,
-        p_data_->name, kNoEventId,
-        kZeroNumArgs, NULL, NULL, NULL,
-        TRACE_EVENT_FLAG_NONE);
-  }
-}
-
-}  // namespace trace_event_internal