Update monet.

mojo/environment/default_task_tracker_impl.cc

Index: mojo/environment/default_task_tracker_impl.cc
diff --git a/mojo/environment/default_task_tracker_impl.cc b/mojo/environment/default_task_tracker_impl.cc
deleted file mode 100644
index a53f1b9fe11d0a7a94625da440aa1d1198c6cfa3..0000000000000000000000000000000000000000
--- a/mojo/environment/default_task_tracker_impl.cc
+++ /dev/null
@@ -1,35 +0,0 @@
-// 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 "mojo/environment/default_task_tracker_impl.h"
-
-namespace mojo {
-namespace internal {
-namespace {
-
-TaskTrackingId StartTracking(const char* function_name,
-                             const char* file_name,
-                             int line_number,
-                             const void* program_counter) {
-  return TaskTrackingId(0);
-}
-
-void EndTracking(const TaskTrackingId id) {
-}
-
-void SetEnabled(bool enabled) {
-}
-
-const TaskTracker kDefaultTaskTracker = {&StartTracking,
-                                         &EndTracking,
-                                         &SetEnabled};
-
-}  // namespace
-
-const TaskTracker* GetDefaultTaskTracker() {
-  return &kDefaultTaskTracker;
-}
-
-}  // namespace internal
-}  // namespace mojo