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diff --git a/third_party/jpeg-xl/lib/jxl/base/scope_guard.h b/third_party/jpeg-xl/lib/jxl/base/scope_guard.h
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+++ b/third_party/jpeg-xl/lib/jxl/base/scope_guard.h
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+// Copyright (c) the JPEG XL Project 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 LIB_JXL_BASE_SCOPE_GUARD_H_
+#define LIB_JXL_BASE_SCOPE_GUARD_H_
+
+#include <utility>
+
+namespace jxl {
+
+template <typename Callback>
+class ScopeGuard {
+ public:
+  // Discourage unnecessary moves / copies.
+  ScopeGuard(const ScopeGuard &) = delete;
+  ScopeGuard &operator=(const ScopeGuard &) = delete;
+  ScopeGuard &operator=(ScopeGuard &&) = delete;
+
+  // Pre-C++17 does not guarantee RVO -> require move constructor.
+  ScopeGuard(ScopeGuard &&other) : callback_(std::move(other.callback_)) {
+    other.armed_ = false;
+  }
+
+  template <typename CallbackParam>
+  explicit ScopeGuard(CallbackParam &&callback)
+      : callback_(std::forward<CallbackParam>(callback)), armed_(true) {}
+
+  ~ScopeGuard() {
+    if (armed_) callback_();
+  }
+
+  void Disarm() { armed_ = false; }
+
+ private:
+  Callback callback_;
+  bool armed_;
+};
+
+template <typename Callback>
+ScopeGuard<Callback> MakeScopeGuard(Callback &&callback) {
+  return ScopeGuard<Callback>{std::forward<Callback>(callback)};
+}
+
+}  // namespace jxl
+
+#endif  // LIB_JXL_BASE_SCOPE_GUARD_H_