Skip service/debugger_location_test see Issue 27434.

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 1e49905b330d944292d6d05dbfda2b4428babac4..e3cc4de0d4dfbbb66be834c1d3e268073f512adb 100644
--- a/runtime/observatory/tests/service/service.status
+++ b/runtime/observatory/tests/service/service.status
@@ -7,6 +7,7 @@ vm_timeline_flags_test: Pass, RuntimeError # Issue 26483
 gc_test: Pass, RuntimeError # Issue 26490
 pause_on_start_and_exit_test: Pass, RuntimeError # Issue 26470
 pause_on_start_then_step_test: Pass, RuntimeError # Issue 26470
+debugger_location_test: Skip # Issue 27434
 
 [ ($compiler == none || $compiler == precompiler) && ($runtime == vm || $runtime == dart_precompiled) ]
 evaluate_activation_test/instance: RuntimeError # http://dartbug.com/20047