Fix argument names for handleIndexedExpression.

pkg/analyzer/lib/src/summary/fasta/summary_builder.dart

 // Copyright (c) 2017, 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.
 
 /// Logic to build unlinked summaries.
 library summary.src.summary_builder;
 
 import 'package:front_end/src/fasta/parser.dart'
     show
         ClassMemberParser,
@@ skipping 108 matching lines @@
     if (ignore) return;
     push(new As(pop(), pop()));
   }
 
   void handleAssignmentExpression(Token operator) {
     pop(); // lhs
     pop(); // rhs
     push(new Invalid(hint: "assign"));
   }
 
-  void handleIndexedExpression(Token openSquareBracket, Token token) {
+  void handleIndexedExpression(
+      Token openSquareBracket, Token closeSquareBracket) {
     debugEvent("Index");
     if (ignore) return;
     pop(); // receiver
     pop(); // index
     push(new Invalid(hint: "index"));
   }
 
   void handleNamedArgument(colon) {
     debugEvent("NamedArg");
     if (ignore) return;
@@ skipping 504 matching lines @@
     var left = pop();
     var right = pop();
     var kind = operator.kind;
     if (kind == EQ_TOKEN) {
       push(new OpaqueOp(right));
     } else {
       push(new OpaqueOp(new Binary(left, right, opForAssignOp(kind))));
     }
   }
 
-  void handleIndexedExpression(Token openSquareBracket, Token token) {
+  void handleIndexedExpression(
+      Token openSquareBracket, Token closeSquareBracket) {
     debugEvent("Index");
     if (ignore) return;
     pop();
     pop();
     push(new Opaque());
   }
 
   void handleIsOperator(Token operator, Token not, Token endToken) {
     debugEvent("Is");
     if (ignore) return;
@@ skipping 893 matching lines @@
 }
 
 /// Internal representation of an initialized name.
 class _InitializedName {
   final String name;
   final UnlinkedExecutableBuilder initializer;
   _InitializedName(this.name, this.initializer);
 
   toString() => "II:" + (initializer != null ? "$name = $initializer" : name);
 }