Introducing SurfaceReferenceFactory

cc/surfaces/sequence_surface_reference.h

Index: cc/surfaces/sequence_surface_reference.h
diff --git a/cc/surfaces/sequence_surface_reference.h b/cc/surfaces/sequence_surface_reference.h
new file mode 100644
index 0000000000000000000000000000000000000000..2f79f71cc789c9c0812541cc96d640a93340781b
--- /dev/null
+++ b/cc/surfaces/sequence_surface_reference.h
@@ -0,0 +1,32 @@
+// Copyright 2016 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 CC_SURFACES_SEQUENCE_SURFACE_REFERENCE_H_
+#define CC_SURFACES_SEQUENCE_SURFACE_REFERENCE_H_
+
+#include "cc/surfaces/surface_reference_base.h"
+#include "cc/surfaces/surface_reference_factory.h"
+#include "cc/surfaces/surface_sequence.h"
+
+namespace cc {
+
+// A surface reference which is internally implemented using SurfaceSequence
+class SequenceSurfaceReference final : public SurfaceReferenceBase {
+ public:
+  SequenceSurfaceReference(scoped_refptr<const SurfaceReferenceFactory> factory,
+                           const SurfaceSequence& sequence);
+
+  ~SequenceSurfaceReference() override;
+
+  const SurfaceSequence& sequence() const { return sequence_; }
+
+ private:
+  const SurfaceSequence sequence_;
+
+  DISALLOW_COPY_AND_ASSIGN(SequenceSurfaceReference);
+};
+
+}  // namespace cc
+
+#endif  // CC_SURFACES_SEQUENCE_SURFACE_REFERENCE_H_