Start using <type_traits> and <utility> (C++11).

include/private/SkUtility.h

Index: include/private/SkUtility.h
diff --git a/include/private/SkUtility.h b/include/private/SkUtility.h
deleted file mode 100644
index a96e8fe292685772230d5b4fe59461d18e0359b2..0000000000000000000000000000000000000000
--- a/include/private/SkUtility.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkUtility_DEFINED
-#define SkUtility_DEFINED
-
-#include "SkTLogic.h"
-
-namespace skstd {
-
-template <typename T> inline remove_reference_t<T>&& move(T&& t) {
-  return static_cast<remove_reference_t<T>&&>(t);
-}
-
-template <typename T> inline T&& forward(remove_reference_t<T>& t) /*noexcept*/ {
-    return static_cast<T&&>(t);
-}
-template <typename T> inline T&& forward(remove_reference_t<T>&& t) /*noexcept*/ {
-    static_assert(!is_lvalue_reference<T>::value,
-                  "Forwarding an rvalue reference as an lvalue reference is not allowed.");
-    return static_cast<T&&>(t);
-}
-
-template <typename T> add_rvalue_reference_t<T> declval();
-
-}  // namespace skstd
-
-#endif