Remove accessor properties not used by Fasta.

pkg/front_end/lib/src/fasta/kernel/fasta_accessors.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 fasta.fasta_accessors;
 
 export 'frontend_accessors.dart' show wrapInvalid;
 
 import 'package:front_end/src/fasta/kernel/kernel_shadow_ast.dart'
     show KernelArguments, KernelMethodInvocation;
@@ skipping 139 matching lines @@
       int offset}) {
     return helper.throwNoSuchMethodError(name ?? plainNameForWrite, arguments,
         offset ?? offsetForToken(this.token),
         isGetter: isGetter, isSetter: isSetter, isSuper: isSuper);
   }
 
   bool get isThisPropertyAccessor => false;
 }
 
 abstract class ErrorAccessor implements FastaAccessor {
-  @override
-  Expression get builtBinary => internalError("Unsupported operation.");
-
-  @override
-  void set builtBinary(Expression expression) {
-    internalError("Unsupported operation.");
-  }
-
-  @override
-  Expression get builtGetter => internalError("Unsupported operation.");
-
-  @override
-  void set builtGetter(Expression expression) {
-    internalError("Unsupported operation.");
-  }
-
   /// Pass [arguments] that must be evaluated before throwing an error.  At
   /// most one of [isGetter] and [isSetter] should be true and they're passed
   /// to [BuilderHelper.buildThrowNoSuchMethodError] if it is used.
   Expression buildError(Arguments arguments,
       {bool isGetter: false, bool isSetter: false, int offset});
 
   Name get name => internalError("Unsupported operation.");
 
   @override
   String get plainNameForRead => name.name;
@@ skipping 81 matching lines @@
 
   final Token token;
 
   final bool isInitializer;
 
   final bool isSuper;
 
   ThisAccessor(this.helper, this.token, this.isInitializer,
       {this.isSuper: false});
 
-  @override
-  Expression get builtBinary => internalError("Unsupported operation.");
-
-  @override
-  void set builtBinary(Expression expression) {
-    internalError("Unsupported operation.");
-  }
-
-  @override
-  Expression get builtGetter => internalError("Unsupported operation.");
-
-  @override
-  void set builtGetter(Expression expression) {
-    internalError("Unsupported operation.");
-  }
-
   String get plainNameForRead => internalError(isSuper ? "super" : "this");
 
   Expression buildSimpleRead() {
     if (!isSuper) {
       return new ThisExpression();
     } else {
       return helper.buildCompileTimeError(
           "Can't use `super` as an expression.", offsetForToken(token));
     }
   }
@@ skipping 103 matching lines @@
 abstract class IncompleteSend extends FastaAccessor {
   final BuilderHelper helper;
 
   @override
   final Token token;
 
   final Name name;
 
   IncompleteSend(this.helper, this.token, this.name);
 
-  @override
-  Expression get builtBinary => internalError("Unsupported operation.");
-
-  @override
-  void set builtBinary(Expression expression) {
-    internalError("Unsupported operation.");
-  }
-
-  @override
-  Expression get builtGetter => internalError("Unsupported operation.");
-
-  @override
-  void set builtGetter(Expression expression) {
-    internalError("Unsupported operation.");
-  }
-
   withReceiver(Object receiver, {bool isNullAware});
 }
 
 class IncompleteError extends IncompleteSend with ErrorAccessor {
   final Object error;
 
   IncompleteError(BuilderHelper helper, Token token, this.error)
       : super(helper, token, null);
 
   @override
@@ skipping 481 matching lines @@
             new NullLiteral(),
             new KernelMethodInvocation(
                 new VariableGet(variable), name, arguments)
               ..fileOffset = offset,
             const DynamicType()));
   } else {
     return new KernelMethodInvocation(receiver, name, arguments)
       ..fileOffset = offset;
   }
 }