Implement media::VideoDecodeAccelerator on Mac

base/memory/scoped_policy.h

Index: base/memory/scoped_policy.h
diff --git a/base/memory/scoped_policy.h b/base/memory/scoped_policy.h
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+// Copyright (c) 2012 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 BASE_MEMORY_SCOPED_POLICY_H_
+#define BASE_MEMORY_SCOPED_POLICY_H_
+#pragma once
+
+namespace base {
+namespace scoped_policy {
+
+// Defines the ownership policy for a scoped object.
+enum OwnershipPolicy {
+  // The scoped object takes ownership of an object by taking over an existing
+  // ownership claim.
+  ASSUME,
+
+  // The scoped object will retain the the object and any initial ownership is
+  // not changed.
+  RETAIN
+};
+
+}  // namespace scoped_policy
+}  // namespace base
+
+#endif  // BASE_MEMORY_SCOPED_POLICY_H_