Add missing _jni in the build file. Fixing the build.

Change-Id: I9a8114db21c5ee2c04af6fdbca38ffd735f58d10
diff --git a/build/Android.common.mk b/build/Android.common.mk
index 7a3dffb..a0d8392 100644
--- a/build/Android.common.mk
+++ b/build/Android.common.mk
@@ -194,8 +194,8 @@
 LIBARTTEST_COMMON_SRC_FILES := \
 	src/base64.cc \
 	src/jni_tests.cc \
-	test/StackWalk/stack_walk.cc \
-	test/ReferenceMap/stack_walk_refmap.cc
+	test/StackWalk/stack_walk_jni.cc \
+	test/ReferenceMap/stack_walk_refmap_jni.cc
 
 TEST_COMMON_SRC_FILES := \
 	src/class_linker_test.cc \