vm-service: Include pauseEvent even when running without debugger support.

runtime/observatory/lib/src/service/object.dart

Index: runtime/observatory/lib/src/service/object.dart
diff --git a/runtime/observatory/lib/src/service/object.dart b/runtime/observatory/lib/src/service/object.dart
index 4110e923f26e074f58201e5b51d69a976ca3f22c..85574feb1940361f0fac7e469aba2c9765473e03 100644
--- a/runtime/observatory/lib/src/service/object.dart
+++ b/runtime/observatory/lib/src/service/object.dart
@@ -1455,7 +1455,11 @@ class Isolate extends ServiceObjectOwner implements M.Isolate {
 
     updateHeapsFromMap(map['_heaps']);
     _updateBreakpoints(map['breakpoints']);
-    exceptionsPauseInfo = map['_debuggerSettings']['_exceptions'];
+    if (map['_debuggerSettings'] != null) {
+      exceptionsPauseInfo = map['_debuggerSettings']['_exceptions'];
+    } else {
+      exceptionsPauseInfo = "none";
+    }
 
     var newPauseEvent = map['pauseEvent'];
     assert((pauseEvent == null) ||