Move base to DEPS

base/files/file_tracing.cc

-// Copyright 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.
-
-#include "base/files/file_tracing.h"
-
-#include "base/files/file.h"
-
-namespace base {
-
-namespace {
-FileTracing::Provider* g_provider = nullptr;
-}
-
-// static
-bool FileTracing::IsCategoryEnabled() {
-  return g_provider && g_provider->FileTracingCategoryIsEnabled();
-}
-
-// static
-void FileTracing::SetProvider(FileTracing::Provider* provider) {
-  g_provider = provider;
-}
-
-FileTracing::ScopedEnabler::ScopedEnabler() {
-  if (g_provider)
-    g_provider->FileTracingEnable(this);
-}
-
-FileTracing::ScopedEnabler::~ScopedEnabler() {
-  if (g_provider)
-    g_provider->FileTracingDisable(this);
-}
-
-FileTracing::ScopedTrace::ScopedTrace() : id_(nullptr) {}
-
-FileTracing::ScopedTrace::~ScopedTrace() {
-  if (id_ && g_provider)
-    g_provider->FileTracingEventEnd(name_, id_);
-}
-
-void FileTracing::ScopedTrace::Initialize(
-    const char* name, File* file, int64 size) {
-  id_ = &file->trace_enabler_;
-  name_ = name;
-  g_provider->FileTracingEventBegin(name_, id_, file->tracing_path_, size);
-}
-
-}  // namespace base