A couple of improvements to JRE test makefiles.

- Add dependency test_sources.mk to target AllJreTests.java.
- Remove unused constant FAILING_TESTS

	Change on 2018/09/20 by antoniocortes <antoniocortes@google.com>

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=213819383

jre_emul/test_sources.mk

@@ -841,9 +841,6 @@ TESTS_TO_SKIP = \
     org/apache/harmony/tests/javax/net/ssl/SSLSocketFactoryTest.java \
     org/apache/harmony/tests/javax/net/ssl/SSLSocketTest.java
 
-FAILING_TESTS = \
-    libcore/java/text/DateFormatSymbolsTest.java
-
 # Most of these tests are failing for a common index-out-of-range error.
 FAILING_MATH_TESTS = \
     org/apache/harmony/tests/java/math/BigDecimalArithmeticTest.java \

jre_emul/tests.mk

@@ -255,7 +255,7 @@ $(TEST_BIN): $(TEST_OBJS) $(SUPPORT_LIB) $(DIST_JRE_EMUL_LIB) $(DIST_JUNIT_LIB)
 	@echo "  " $(TEST_JOCC) $(LINK_FLAGS) ...
 	@$(TEST_JOCC) $(LINK_FLAGS) -o $@ $(TEST_OBJS)
 
-$(ALL_TESTS_SOURCE): tests.mk
+$(ALL_TESTS_SOURCE): tests.mk test_sources.mk
 	@mkdir -p $(@D)
 	@xcrun awk -f gen_all_tests.sh $(TESTS_TO_RUN) > $@