Replacing SurfaceReferenceBase and SequenceSurfaceReference with Closures

cc/surfaces/scoped_surface_reference.cc

Index: cc/surfaces/scoped_surface_reference.cc
diff --git a/cc/surfaces/scoped_surface_reference.cc b/cc/surfaces/scoped_surface_reference.cc
new file mode 100644
index 0000000000000000000000000000000000000000..284c8d2705b93b9397c6777a2072cb7a95492eb2
--- /dev/null
+++ b/cc/surfaces/scoped_surface_reference.cc
@@ -0,0 +1,19 @@
+// 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 "cc/surfaces/scoped_surface_reference.h"
+
+namespace cc {
+
+ScopedSurfaceReference::ScopedSurfaceReference(
+    scoped_refptr<const SurfaceReferenceFactory> factory,
+    const SurfaceReference& surface_reference)
+    : ScopedSurfaceReferenceBase(factory),
+      surface_reference_(surface_reference) {}
+
+ScopedSurfaceReference::~ScopedSurfaceReference() {
+  Destroy();
+}
+
+}  // namespace cc