Fix build break.

Change-Id: I362c96787482bc8daee7dd4a01817ab7ed79b730
diff --git a/graphics/java/android/renderscript/Allocation.java b/graphics/java/android/renderscript/Allocation.java
index 2f3e48c..a99cdad 100644
--- a/graphics/java/android/renderscript/Allocation.java
+++ b/graphics/java/android/renderscript/Allocation.java
@@ -1261,6 +1261,13 @@
     }
 
     /**
+     * @hide
+     */
+    public void setSurfaceTexture(SurfaceTexture st) {
+        setSurface(new Surface(st));
+    }
+
+    /**
      * Associate a surface for io output with this allocation
      *
      * @param sur Surface to associate with allocation