Temporary hack to get rid of new virtuals.

Seems like it breaks some prebuilt binaries.

Change-Id: Ia5e35beb4538364b2ab3618fbf21b2e9c9ee2363
diff --git a/cmds/cmd/cmd.cpp b/cmds/cmd/cmd.cpp
index 01d0a47..ed740d3 100644
--- a/cmds/cmd/cmd.cpp
+++ b/cmds/cmd/cmd.cpp
@@ -90,6 +90,7 @@
     }
 
     // TODO: block until a result is returned to MyResultReceiver.
-    service->shellCommand(STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO, args, new MyResultReceiver());
+    IBinder::shellCommand(service, STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO, args,
+            new MyResultReceiver());
     return 0;
 }