ART: Use v2 version of NativeBridge struct

Update the struct to the new version, but without implementation.

Bug: 20217701

(cherry picked from commit 540cc3d49c858e670591d8c00fcd87576cdbede6)

Change-Id: Ic23a60b949f119c7d8b0e7cb27a61e6c16532a23
diff --git a/test/115-native-bridge/nativebridge.cc b/test/115-native-bridge/nativebridge.cc
index 24e9600..db2fc9b 100644
--- a/test/115-native-bridge/nativebridge.cc
+++ b/test/115-native-bridge/nativebridge.cc
@@ -327,5 +327,7 @@
   .loadLibrary = &native_bridge_loadLibrary,
   .getTrampoline = &native_bridge_getTrampoline,
   .isSupported = &native_bridge_isSupported,
-  .getAppEnv = &native_bridge_getAppEnv
+  .getAppEnv = &native_bridge_getAppEnv,
+  .isCompatibleWith = nullptr,
+  .getSignalHandler = nullptr
 };