Retaining path improvements.

runtime/observatory/tests/service/get_retaining_path_rpc_test.dart

Index: runtime/observatory/tests/service/get_retaining_path_rpc_test.dart
diff --git a/runtime/observatory/tests/service/get_retaining_path_rpc_test.dart b/runtime/observatory/tests/service/get_retaining_path_rpc_test.dart
index dbb43c714d152febf3ae04c00730881d1ec4dd02..f773daecdc6ec537a8dfb00fb45733ed20d688d2 100644
--- a/runtime/observatory/tests/service/get_retaining_path_rpc_test.dart
+++ b/runtime/observatory/tests/service/get_retaining_path_rpc_test.dart
@@ -78,7 +78,7 @@ var tests = [
     };
     var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
     expect(result['type'], equals('RetainingPath'));
-    expect(result['elements'][0]['parentField']['name'], equals('x'));
+    expect(result['elements'][1]['parentField']['name'], equals('x'));
     expect(result['elements'][2]['value']['name'], equals('globalObject'));
   },
 
@@ -91,7 +91,7 @@ var tests = [
     };
     var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
     expect(result['type'], equals('RetainingPath'));
-    expect(result['elements'][0]['parentField']['name'], equals('y'));
+    expect(result['elements'][1]['parentField']['name'], equals('y'));
     expect(result['elements'][2]['value']['name'], equals('globalObject'));
   },
 
@@ -104,7 +104,7 @@ var tests = [
     };
     var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
     expect(result['type'], equals('RetainingPath'));
-    expect(result['elements'][0]['parentListIndex'], equals(12));
+    expect(result['elements'][1]['parentListIndex'], equals(12));
     expect(result['elements'][2]['value']['name'], equals('globalList'));
   },
 ];