diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 58f7e8f..604de38 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -253,6 +253,9 @@
     float getDpiY(int disp) const;
     bool isConnected(int disp) const;
 
+    status_t setVirtualDisplayProperties(int32_t id, uint32_t w, uint32_t h,
+            uint32_t format);
+
     // this class is only used to fake the VSync event on systems that don't
     // have it.
     class VSyncThread : public Thread {