[kernel] offsets on direct property get/set

pkg/front_end/lib/src/fasta/kernel/builder_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.builder_accessors;
 
 export 'frontend_accessors.dart' show wrapInvalid;
 
 import 'frontend_accessors.dart' show Accessor;
 
@@ skipping 198 matching lines @@
       // Notice that 'this' or 'super' can't be null. So we can ignore the
       // value of [isNullAware].
       MethodInvocation result = buildMethodInvocation(
           new ThisExpression(), send.name, send.arguments, charOffset);
       return isSuper ? helper.toSuperMethodInvocation(result) : result;
     } else {
       if (isSuper) {
         Member getter = helper.lookupSuperMember(send.name);
         Member setter = helper.lookupSuperMember(send.name, isSetter: true);
         return new SuperPropertyAccessor(
-            helper, charOffset, send.name, getter, setter);
+            helper, send.charOffset, send.name, getter, setter);
       } else {
         return new ThisPropertyAccessor(
-            helper, charOffset, send.name, null, null);
+            helper, send.charOffset, send.name, null, null);
       }
     }
   }
 
   doInvocation(int charOffset, Arguments arguments) {
     if (isInitializer) {
       return buildConstructorInitializer(charOffset, new Name(""), arguments);
     } else {
       return buildMethodInvocation(
           new ThisExpression(), new Name("call"), arguments, charOffset);
@@ skipping 355 matching lines @@
     }
   }
 
   toString() => "StaticAccessor()";
 }
 
 class SuperPropertyAccessor extends kernel.SuperPropertyAccessor
     with BuilderAccessor {
   final BuilderHelper helper;
 
-  final int charOffset;
-
   SuperPropertyAccessor(
-      this.helper, this.charOffset, Name name, Member getter, Member setter)
-      : super(name, getter, setter);
+      this.helper, int charOffset, Name name, Member getter, Member setter)
+      : super(name, getter, setter, charOffset);
 
   String get plainNameForRead => name.name;
 
   Expression doInvocation(int charOffset, Arguments arguments) {
     if (getter == null || isFieldOrGetter(getter)) {
       return buildMethodInvocation(
           buildSimpleRead(), new Name("call"), arguments, charOffset);
     } else {
       return new DirectMethodInvocation(new ThisExpression(), getter, arguments)
         ..fileOffset = charOffset;
@@ skipping 144 matching lines @@
             buildIsNull(new VariableGet(variable)),
             new NullLiteral(),
             new MethodInvocation(new VariableGet(variable), name, arguments)
               ..fileOffset = charOffset,
             const DynamicType()));
   } else {
     return new MethodInvocation(receiver, name, arguments)
       ..fileOffset = charOffset;
   }
 }