Introduce base::ScopedPlatformHandle

base/files/scoped_platform_handle.cc

Index: base/files/scoped_platform_handle.cc
diff --git a/base/files/scoped_platform_handle.cc b/base/files/scoped_platform_handle.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a0c301558489cbca8cefd20c2d959e4cb52e1ab5
--- /dev/null
+++ b/base/files/scoped_platform_handle.cc
@@ -0,0 +1,31 @@
+// Copyright 2017 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 "base/files/scoped_platform_handle.h"
+
+namespace base {
+
+ScopedPlatformHandle::ScopedPlatformHandle() : ScopedPlatformHandle(nullptr) {}
+
+ScopedPlatformHandle::ScopedPlatformHandle(std::nullptr_t) {}
+
+ScopedPlatformHandle::ScopedPlatformHandle(ScopedPlatformHandle&& other) =
+    default;
+
+ScopedPlatformHandle::ScopedPlatformHandle(HandleType handle)
+    : handle_(handle) {}
+
+ScopedPlatformHandle::ScopedPlatformHandle(ScopedHandleType handle)
+    : handle_(std::move(handle)) {}
+
+ScopedPlatformHandle::~ScopedPlatformHandle() {}
+
+ScopedPlatformHandle& ScopedPlatformHandle::operator=(
+    ScopedPlatformHandle&& other) = default;
+
+ScopedPlatformHandle::ScopedHandleType ScopedPlatformHandle::Take() {
+  return ScopedHandleType(release());
+}
+
+}  // namespace base