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diff --git a/services/surfaceflinger/DisplayUtils.h b/services/surfaceflinger/DisplayUtils.h
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+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ANDROID_DISPLAY_UTILS_H
+#define ANDROID_DISPLAY_UTILS_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include "Layer.h"
+#include "SurfaceFlinger.h"
+#include "DisplayHardware/HWComposer.h"
+#include "DisplayHardware/VirtualDisplaySurface.h"
+
+// ---------------------------------------------------------------------------
+
+namespace android {
+
+class IGraphicBufferProducer;
+class IGraphicBufferConsumer;
+class DisplaySurface;
+
+/* Factory Classes */
+
+class DisplayUtils {
+  public:
+    static DisplayUtils* getInstance() ANDROID_API;
+    SurfaceFlinger* getSFInstance() ANDROID_API;
+    Layer* getLayerInstance(SurfaceFlinger*, const sp<Client>&,
+                            const String8&, uint32_t,
+                            uint32_t, uint32_t);
+    HWComposer* getHWCInstance(const sp<SurfaceFlinger>& flinger,
+                            HWComposer::EventHandler& handler);
+    void initVDSInstance(HWComposer* hwc, int32_t hwcDisplayId,
+            sp<IGraphicBufferProducer> currentStateSurface, sp<DisplaySurface> &dispSurface,
+            sp<IGraphicBufferProducer> &producer, sp<IGraphicBufferProducer> bqProducer,
+            sp<IGraphicBufferConsumer> bqConsumer, String8 currentStateDisplayName,
+            bool currentStateIsSecure, int currentStateType);
+    bool canAllocateHwcDisplayIdForVDS(int usage);
+    DisplayUtils();
+  private:
+    static DisplayUtils* sDisplayUtils;
+    static bool sUseExtendedImpls;
+
+    bool createV4L2BasedVirtualDisplay(HWComposer* hwc, int32_t &hwcDisplayId,
+                   sp<DisplaySurface> &dispSurface, sp<IGraphicBufferProducer> &producer,
+                   sp<IGraphicBufferProducer> currentStateSurface,
+                   sp<IGraphicBufferProducer> bqProducer,
+                   sp<IGraphicBufferConsumer> bqConsumer, int currentStateType);
+};
+
+}; // namespace android
+
+#endif // ANDROID_DISPLAY_UTILS_H