Add type inference for super property gets.

pkg/analyzer/test/src/task/strong/front_end_inference_test.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.
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 489 matching lines @@
     if (node.typeArguments == null) {
       var inferredTypeArguments = _getInferredFunctionTypeArguments(
               node.function.staticType,
               node.staticInvokeType,
               node.typeArguments)
           .toList();
       if (inferredTypeArguments.isNotEmpty) {
         _recordTypeArguments(node.methodName.offset, inferredTypeArguments);
       }
     }
+    var methodElement = node.methodName.staticElement;
+    if (node.target is SuperExpression &&
+        methodElement is PropertyAccessorElement) {
+      // This is a hack since analyzer doesn't record .call targets
+      var getterClass = methodElement.returnType.element;
+      if (getterClass is ClassElement) {
+        var target = getterClass.lookUpMethod('call', null) ??
+            getterClass.lookUpGetter('call', null);
+        if (target != null) {
+          _recordTarget(node.argumentList.offset, target);
+        }
+      }
+    }
   }
 
   visitPrefixExpression(PrefixExpression node) {
     super.visitPrefixExpression(node);
     if (node.operator.type != TokenType.PLUS_PLUS &&
         node.operator.type != TokenType.MINUS_MINUS) {
       _recordTarget(node.operator.charOffset, node.staticElement);
     }
   }
 
@@ skipping 87 matching lines @@
 
   /// Based on DDC code generator's `_recoverTypeArguments`
   Iterable<DartType> _recoverTypeArguments(FunctionType g, FunctionType f) {
     assert(identical(g.element, f.element));
     assert(g.typeFormals.isNotEmpty && f.typeFormals.isEmpty);
     assert(g.typeFormals.length + g.typeArguments.length ==
         f.typeArguments.length);
     return f.typeArguments.skip(g.typeArguments.length);
   }
 }