Update mojo sdk to rev e7270700d671fa8e458b4d8c9e47f7bcfb65da0b

mojo/environment/default_task_tracker_impl.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 "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