Add summary support for ConstructorElement.nameEnd and .periodOffset.

pkg/analyzer/lib/src/summary/summarize_ast.dart

 // Copyright (c) 2016, 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 serialization.summarize_ast;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
@@ skipping 822 matching lines @@
         node.documentationComment,
         node.metadata);
   }
 
   @override
   void visitConstructorDeclaration(ConstructorDeclaration node) {
     UnlinkedExecutableBuilder b = new UnlinkedExecutableBuilder();
     if (node.name != null) {
       b.name = node.name.name;
       b.nameOffset = node.name.offset;
+      b.periodOffset = node.period.offset;
+      b.nameEnd = node.name.end;
     } else {
       b.nameOffset = node.returnType.offset;
     }
     b.parameters = node.parameters.parameters
         .map((FormalParameter p) => p.accept(this))
         .toList();
     b.kind = UnlinkedExecutableKind.constructor;
     if (node.factoryKeyword != null) {
       b.isFactory = true;
       if (node.redirectedConstructor != null) {
@@ skipping 270 matching lines @@
 /**
  * A [_TypeParameterScope] is a [_Scope] which defines [_ScopedTypeParameter]s.
  */
 class _TypeParameterScope extends _Scope {
   /**
    * Get the number of [_ScopedTypeParameter]s defined in this
    * [_TypeParameterScope].
    */
   int get length => _definedNames.length;
 }