Pass ElementImpl as a context for resynthesizing types.

pkg/analyzer/test/src/summary/resynthesize_common.dart

Index: pkg/analyzer/test/src/summary/resynthesize_common.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_common.dart b/pkg/analyzer/test/src/summary/resynthesize_common.dart
index 748deea1f0e8524c517b746be61b590dfa5b13dc..aee2ada282422f0fdd95c5ef0a6f4678ae632f6f 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_common.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_common.dart
@@ -8549,6 +8549,82 @@ class C<T, U> {
     }
   }
 
+  test_genericFunction_asFunctionReturnType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+int Function(int a, String b) f() => null;
+''');
+    checkElementText(
+        library,
+        r'''
+(int, String) → int f() {}
+''');
+  }
+
+  test_genericFunction_asFunctionTypedParameterReturnType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+void f(int Function(int a, String b) p(num c)) => null;
+''');
+    checkElementText(
+        library,
+        r'''
+void f((num) → (int, String) → int p) {}
+''');
+  }
+
+  test_genericFunction_asGenericFunctionReturnType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+typedef F = void Function(String a) Function(int b);
+''');
+    checkElementText(
+        library,
+        r'''
+typedef F = (String) → void Function(int b);
+''');
+  }
+
+  test_genericFunction_asMethodReturnType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+class C {
+  int Function(int a, String b) m() => null;
+}
+''');
+    checkElementText(
+        library,
+        r'''
+class C {
+  (int, String) → int m() {}
+}
+''');
+  }
+
+  test_genericFunction_asParameterType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+void f(int Function(int a, String b) p) => null;
+''');
+    checkElementText(
+        library,
+        r'''
+void f((int, String) → int p) {}
+''');
+  }
+
+  test_genericFunction_asTopLevelVariableType() {
+    shouldCompareLibraryElements = false;
+    var library = checkLibrary(r'''
+int Function(int a, String b) v;
+''');
+    checkElementText(
+        library,
+        r'''
+(int, String) → int v;
+''');
+  }
+
   test_getElement_constructor_named() {
     String text = 'class C { C.named(); }';
     Source source = addLibrarySource('/test.dart', text);