Define run-test targets.

Addressing review comment on https://android-review.googlesource.com/#/c/98456/11

(cherry picked from commit bf66bce894595c2d197c636e28d2c3a8044925e2)

Change-Id: I6582378f2e41692bd0dae86133578cb4c17427cf
diff --git a/test/Android.run-test.mk b/test/Android.run-test.mk
index d359fb0..e76e03b 100644
--- a/test/Android.run-test.mk
+++ b/test/Android.run-test.mk
@@ -62,6 +62,7 @@
   TEST_ART_RUN_TEST_BUILD_RULES += $$(dmart_target)
   dmart_target :=
 endef
+$(foreach test, $(TEST_ART_RUN_TESTS), $(eval $(call define-build-art-run-test,$(test))))
 
 include $(CLEAR_VARS)
 LOCAL_MODULE_TAGS := tests