Update rasta direct expectations.

pkg/front_end/test/fasta/rasta/issue_000081.dart.direct.expect

 library;
 import self as self;
 import "dart:core" as core;
 
 class Base extends core::Object {
-  field core::int hashCode;
-  constructor •() → self::Base
-    : self::Base::hashCode = 42, super core::Object::•();
+  field core::int hashCode = 42;
+  constructor •() → void
+    : super core::Object::•()
+    ;
 }
 class Sub extends self::Base {
-  field core::int _hashCode;
-  constructor •() → self::Sub
-    : self::Sub::_hashCode = null, super self::Base::•();
+  field core::int _hashCode = null;
+  constructor •() → void
+    : super self::Base::•()
+    ;
   get hashCode() → dynamic
-    return let final dynamic #t1 = this._hashCode in #t1.==(null) ? this._hashCode = super.{self::Base::hashCode} : #t1;
+    return let final dynamic #t1 = this._hashCode in #t1.==(null) ? this._hashCode = this.{=self::Base::hashCode} : #t1;
   method foo() → dynamic {
-    this._hashCode.==(null) ? this._hashCode = super.{self::Base::hashCode} : null;
+    this._hashCode.==(null) ? this._hashCode = this.{=self::Base::hashCode} : null;
   }
 }
 static method main() → dynamic {
   core::print(new self::Sub::•().hashCode);
   dynamic l = <dynamic>[null];
   let final dynamic #t2 = l in let final dynamic #t3 = 0 in #t2.[](#t3).==(null) ? #t2.[]=(#t3, "fisk") : null;
 }