should fix build.

Change-Id: I7705227ad123c73714af2ecb7ad84f5432a21c1d
diff --git a/services/surfaceflinger/LayerBase.h b/services/surfaceflinger/LayerBase.h
index a4f1bb7..135b3a6 100644
--- a/services/surfaceflinger/LayerBase.h
+++ b/services/surfaceflinger/LayerBase.h
@@ -37,6 +37,7 @@
 
 #include <hardware/hwcomposer.h>
 
+#include "DisplayHardware/DisplayHardware.h"
 #include "Transform.h"
 
 namespace android {