Blacklist test that has been flaky for days.

Change-Id: Ic3f4a10568b03f02c2173fd18e7642bb9ae4e2b3
diff --git a/test/Android.run-test.mk b/test/Android.run-test.mk
index 34f8838..3bf7e4b 100644
--- a/test/Android.run-test.mk
+++ b/test/Android.run-test.mk
@@ -491,6 +491,7 @@
 # between those runs to be able to have precise checks.
 TEST_ART_BROKEN_JIT_RUN_TESTS := \
   137-cfi \
+  904-object-allocation \
   906-iterate-heap \
 
 ifneq (,$(filter jit,$(COMPILER_TYPES)))