DBC: Fix not-stopping/crashing at fast Smi op breakpoints.

runtime/observatory/tests/service/service.status

Index: runtime/observatory/tests/service/service.status
diff --git a/runtime/observatory/tests/service/service.status b/runtime/observatory/tests/service/service.status
index 124f0066334f3349f80cc81b4b41d6f0fd0a5e11..3bed205a0e9dc94b8b8bace5ba223c064887a416 100644
--- a/runtime/observatory/tests/service/service.status
+++ b/runtime/observatory/tests/service/service.status
@@ -55,10 +55,9 @@ get_source_report_test: RuntimeError # Coverage unimplemented.
 get_allocation_samples_test: RuntimeError # Profiling unimplemented.
 get_cpu_profile_timeline_rpc_test: RuntimeError # Profiling unimplemented.
 implicit_getter_setter_test: RuntimeError # Field guards unimplemented.
-get_stack_rpc_test: RuntimeError # Missing breakpoint at fast Smi op
-vm_restart_test: RuntimeError # Missing breakpoint at fast Smi op
-steal_breakpoint_test: Skip # Testee crashes / hangs
-debugging_test: Skip # Testee crashes / hangs
+get_stack_rpc_test: RuntimeError # Missing single stepping check at fast Smi op
+vm_restart_test: RuntimeError # Missing single stepping check at fast Smi op
+debugging_test: RuntimeError # Missing single stepping check at fast Smi op
 
 [ $hot_reload ]
 # Skip all service tests because random reloads interfere.