Update mojo sdk to rev e7270700d671fa8e458b4d8c9e47f7bcfb65da0b

mojo/environment/default_task_tracker_impl.h

Index: mojo/environment/default_task_tracker_impl.h
diff --git a/mojo/environment/default_task_tracker_impl.h b/mojo/environment/default_task_tracker_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..0a417cfb1b3074c205aa699d1228864b8dff9088
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+++ b/mojo/environment/default_task_tracker_impl.h
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+// 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.
+
+#ifndef MOJO_ENVIRONMENT_DEFAULT_TASK_TRACKER_IMPL_H_
+#define MOJO_ENVIRONMENT_DEFAULT_TASK_TRACKER_IMPL_H_
+
+#include "mojo/environment/mojo_environment_impl_export.h"
+#include "third_party/mojo/src/mojo/public/cpp/environment/task_tracker.h"
+
+namespace mojo {
+namespace internal {
+
+MOJO_ENVIRONMENT_IMPL_EXPORT const TaskTracker* GetDefaultTaskTracker();
+
+}  // namespace internal
+}  // namespace mojo
+
+#endif  // MOJO_ENVIRONMENT_DEFAULT_TASK_TRACKER_IMPL_H_