Add very simple cc::Display implementation for surfaces.

cc/surfaces/surface_client.h

+// Copyright 2014 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_SURFACE_CLIENT_H_
+#define CC_SURFACES_SURFACE_CLIENT_H_
+
+#include "cc/resources/returned_resource.h"
+#include "cc/surfaces/surfaces_export.h"
+
+namespace cc {
+
+class CC_SURFACES_EXPORT SurfaceClient {
+ public:
+  virtual ~SurfaceClient() {}
+
+  virtual void ReturnResources(const ReturnedResourceArray& resources) = 0;
+};
+}
+
+#endif  // CC_SURFACES_SURFACE_CLIENT_H_