Support references to top level getters in the summary linker.

pkg/analyzer/test/src/task/strong/inferred_type_test.dart

Index: pkg/analyzer/test/src/task/strong/inferred_type_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
index d1ebb09d621f48089b44c129b61cf6677a1cf90e..16b2803bc9cc746eb44ac4c2590624d3d25becd3 100644
--- a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
+++ b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
@@ -1257,6 +1257,17 @@ class C {
     expect(x.type.toString(), 'int');
   }
 
+  void test_fieldRefersToTopLevelGetter() {
+    var mainUnit = checkFile('''
+class C {
+  final x = y;
+}
+int get y => null;
+''');
+    var x = mainUnit.types[0].fields[0];
+    expect(x.type.toString(), 'int');
+  }
+
   void test_genericMethods_basicDownwardInference() {
     checkFile(r'''
 /*=T*/ f/*<S, T>*/(/*=S*/ s) => null;