Fix for missing LineInfo to SDK entries.

pkg/analysis_server/test/analysis/notification_navigation_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.analysis.notification.navigation;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol.dart';
@@ skipping 168 matching lines @@
 class AAA {}
 AAA aaa;
 ''');
     return waitForTasksFinished().then((_) {
       return prepareNavigation().then((_) {
         assertHasRegionTarget('AAA aaa;', 'AAA {}');
       });
     });
   }
 
+  test_class_fromSDK() {
+    addTestFile('''
+int V = 42;
+''');
+    return prepareNavigation().then((_) {
+      assertHasRegion('int V');
+      Element target = testTargets[0];
+      Location location = target.location;
+      expect(location.startLine, greaterThan(0));
+      expect(location.startColumn, greaterThan(0));
+    });
+  }
+
   test_constructor_named() {
     addTestFile('''
 class A {
   A.named(BBB p) {}
 }
 class BBB {}
 ''');
     return prepareNavigation().then((_) {
       // has region for complete "A.named"
       assertHasRegionString('A.named');
@@ skipping 299 matching lines @@
   test_type_void() {
     addTestFile('''
 void main() {
 }
 ''');
     return prepareNavigation().then((_) {
       assertNoRegionAt('void');
     });
   }
 }