Change type interface target of SuperMethodInvocation to Procedure

pkg/kernel/lib/ast.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.
 
 /// -----------------------------------------------------------------------
 ///                           ERROR HANDLING
 /// -----------------------------------------------------------------------
 ///
 /// As a rule of thumb, errors that can be detected statically are handled by
 /// the frontend, typically by translating the erroneous code into a 'throw' or
@@ skipping 1812 matching lines @@
   }
 }
 
 /// Expression of form `super.foo(x)`.
 ///
 /// The provided arguments might not match the parameters of the target.
 class SuperMethodInvocation extends InvocationExpression {
   Name name;
   Arguments arguments;
 
-  Member interfaceTarget;
+  Procedure interfaceTarget;
 
   SuperMethodInvocation(this.name, this.arguments, this.interfaceTarget) {
     arguments?.parent = this;
   }
 
   DartType getStaticType(TypeEnvironment types) {
     if (interfaceTarget == null) return const DynamicType();
     Class superclass = interfaceTarget.enclosingClass;
     var receiverType =
         types.hierarchy.getTypeAsInstanceOf(types.thisType, superclass);
@@ skipping 1822 matching lines @@
     }
   }
 }
 
 class Source {
   final List<int> lineStarts;
   final String source;
 
   Source(this.lineStarts, this.source);
 }