fix completions in indexed expression

pkg/analysis_server/lib/src/services/completion/local_declaration_visitor.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 services.completion.computer.dart.local.Declaration.visitor;
 
 import 'package:analysis_server/src/services/completion/suggestion_builder.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 
@@ skipping 108 matching lines @@
       } else if (declaration is ClassTypeAlias) {
         declaredClassTypeAlias(declaration);
       } else if (declaration is FunctionTypeAlias) {
         declaredFunctionTypeAlias(declaration);
       }
     });
     return finished;
   }
 
   @override
-  bool visitExpressionStatement(ExpressionStatement node) {
-    Expression expression = node.expression;
-    if (expression is SimpleIdentifier) {
-      if (expression.end < offset) {
-        return finished;
-      }
-    }
-    return visitNode(node);
-  }
-
-  @override
   bool visitForEachStatement(ForEachStatement node) {
     SimpleIdentifier id;
     TypeName type;
     DeclaredIdentifier loopVar = node.loopVariable;
     if (loopVar != null) {
       id = loopVar.identifier;
       type = loopVar.type;
     } else {
       id = node.identifier;
       type = null;
@@ skipping 95 matching lines @@
           type = normalParam.returnType;
         } else if (normalParam is SimpleFormalParameter) {
           type = normalParam.type;
         }
         SimpleIdentifier name = param.identifier;
         declaredParam(name, type);
       });
     }
   }
 }