Add missing Dex file dependency for ART gtest oat_writer_test.

Test: m test-art-host-gtest-oat_writer_test
Change-Id: Iad604d0f282219759814c14dea8fd9253a68ff7f
diff --git a/build/Android.gtest.mk b/build/Android.gtest.mk
index e171289..8681642 100644
--- a/build/Android.gtest.mk
+++ b/build/Android.gtest.mk
@@ -170,6 +170,7 @@
 ART_GTEST_image_space_test_DEX_DEPS := $(ART_GTEST_dex2oat_environment_tests_DEX_DEPS)
 ART_GTEST_oat_file_test_DEX_DEPS := Main MultiDex MainUncompressed MultiDexUncompressed
 ART_GTEST_oat_test_DEX_DEPS := Main
+ART_GTEST_oat_writer_test_DEX_DEPS := Main
 ART_GTEST_object_test_DEX_DEPS := ProtoCompare ProtoCompare2 StaticsFromCode XandY
 ART_GTEST_patchoat_test_DEX_DEPS := $(ART_GTEST_dex2oat_environment_tests_DEX_DEPS)
 ART_GTEST_proxy_test_DEX_DEPS := Interfaces