Add support to dart2js for option --enable-asserts.

tests/language/function_type/function_type2_test.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.
 
 // GENERATED - DON'T EDIT.
 // GENERATED - DON'T EDIT.
 // GENERATED - DON'T EDIT.
 // GENERATED - DON'T EDIT.
 // GENERATED - DON'T EDIT.
 // GENERATED - DON'T EDIT.
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 // GENERATED - DON'T EDIT.
 
 import 'dart:core';
 import 'dart:core' as core;
 import 'package:expect/expect.dart';
 
 @NoInline()
 @AssumeDynamic()
 confuse(f) => f;
 
-final bool inCheckedMode = (() {
-  bool result = false;
-  assert(result = true);
-  return result;
-})();
-
-typedef F0<T>
-    = int Function(int x0, [int x]);
-typedef F1<T>
-    = Function Function(int x0, [List<T> x]);
-typedef F2<T>
-    = core.List<core.int> Function([core.List<core.int> x]);
-typedef F3<T>
-    = Function(List<Function> x);
-typedef F4<T>
-    = Function Function<A>(List<Function> x);
-typedef F5<T>
-    = int Function(int x1, {int x}) Function<B extends core.int>();
-typedef F6<T>
-    = int Function([core.List<core.int> x]) Function<B extends core.int>();
-typedef F7<T>
-    = Function Function(int y, [int x]) Function<B extends core.int>();
-typedef F8<T>
-    = Function Function(int x2,
-        [List<Function> x3]) Function<B extends core.int>();
-typedef F9<T>
-    = Function Function(int x1, {List<T> x}) Function<B extends core.int>();
-typedef F10<T>
-    = List<Function> Function(List<Function> x) Function<B extends core.int>();
-typedef F11<T>
-    = List<Function> Function(int y,
-        [List<T> x]) Function<B extends core.int>();
-typedef F12<T>
-    = core.List<core.int> Function(
-        [Function x1]) Function<B extends core.int>();
-typedef F13<T>
-    = core.List<core.int> Function(
-        {core.List<core.int> x}) Function<B extends core.int>();
-typedef F14<T>
-    = List<T> Function(int y, {int x}) Function<B extends core.int>();
-typedef F15<T>
-    = List<T> Function(int x1,
-        [core.List<core.int> x]) Function<B extends core.int>();
-typedef F16<T>
-    = Function(int x1) Function<B extends core.int>();
-typedef F17<T>
-    = Function(int x, [List<Function> x1]) Function<B extends core.int>();
-typedef F18<T>
-    = Function(int y, {List<T> x}) Function<B extends core.int>();
-typedef F19<T>
-    = void Function([List<Function> x]) Function<B extends core.int>();
-typedef F20<T>
-    = void Function(List<T> x1) Function<B extends core.int>();
-typedef F21<T>
-    = List<Function> Function<A>(Function x) Function<B extends core.int>();
-typedef F22<T>
-    = Function<A>(List<Function> x) Function<B extends core.int>();
-typedef F23<T>
-    = void Function<A>(core.List<core.int> x) Function<B extends core.int>();
+typedef F0<T> = int Function(int x0, [int x]);
+typedef F1<T> = Function Function(int x0, [List<T> x]);
+typedef F2<T> = core.List<core.int> Function([core.List<core.int> x]);
+typedef F3<T> = Function(List<Function> x);
+typedef F4<T> = Function Function<A>(List<Function> x);
+typedef F5<T> = int Function(int x1, {int x}) Function<B extends core.int>();
+typedef F6<T> = int Function([core.List<core.int> x])
+    Function<B extends core.int>();
+typedef F7<T> = Function Function(int y, [int x])
+    Function<B extends core.int>();
+typedef F8<T> = Function Function(int x2, [List<Function> x3])
+    Function<B extends core.int>();
+typedef F9<T> = Function Function(int x1, {List<T> x})
+    Function<B extends core.int>();
+typedef F10<T> = List<Function> Function(List<Function> x)
+    Function<B extends core.int>();
+typedef F11<T> = List<Function> Function(int y, [List<T> x])
+    Function<B extends core.int>();
+typedef F12<T> = core.List<core.int> Function([Function x1])
+    Function<B extends core.int>();
+typedef F13<T> = core.List<core.int> Function({core.List<core.int> x})
+    Function<B extends core.int>();
+typedef F14<T> = List<T> Function(int y, {int x})
+    Function<B extends core.int>();
+typedef F15<T> = List<T> Function(int x1, [core.List<core.int> x])
+    Function<B extends core.int>();
+typedef F16<T> = Function(int x1) Function<B extends core.int>();
+typedef F17<T> = Function(int x, [List<Function> x1])
+    Function<B extends core.int>();
+typedef F18<T> = Function(int y, {List<T> x}) Function<B extends core.int>();
+typedef F19<T> = void Function([List<Function> x])
+    Function<B extends core.int>();
+typedef F20<T> = void Function(List<T> x1) Function<B extends core.int>();
+typedef F21<T> = List<Function> Function<A>(Function x)
+    Function<B extends core.int>();
+typedef F22<T> = Function<A>(List<Function> x) Function<B extends core.int>();
+typedef F23<T> = void Function<A>(core.List<core.int> x)
+    Function<B extends core.int>();
 
 int f0(int x0, [int x]) => null;
 Function f1(int x0, [List<int> x]) => null;
 core.List<core.int> f2([core.List<core.int> x]) => null;
 f3(List<Function> x) => null;
 Function f4<A>(List<Function> x) => null;
 int Function(int x0, {int x}) f5<B extends core.int>() => null;
 int Function([core.List<core.int> x]) f6<B extends core.int>() => null;
 Function Function(int y, [int x]) f7<B extends core.int>() => null;
 Function Function(int x0, [List<Function> x1]) f8<B extends core.int>() => null;
@@ skipping 29 matching lines @@
   int Function([core.List<core.int> x]) Function<B extends core.int>() x6;
   Function Function(int y, [int x]) Function<B extends core.int>() x7;
   Function Function(int x2, [List<Function> x3]) Function<B extends core.int>()
       x8;
   Function Function(int x1, {List<T> x}) Function<B extends core.int>() x9;
   List<Function> Function(List<Function> x) Function<B extends core.int>() x10;
   List<Function> Function(int y, [List<T> x]) Function<B extends core.int>()
       x11;
   core.List<core.int> Function([Function x1]) Function<B extends core.int>()
       x12;
-  core.List<core.int> Function(
-      {core.List<core.int> x}) Function<B extends core.int>() x13;
+  core.List<core.int> Function({core.List<core.int> x})
+      Function<B extends core.int>() x13;
   List<T> Function(int y, {int x}) Function<B extends core.int>() x14;
-  List<T> Function(int x1,
-      [core.List<core.int> x]) Function<B extends core.int>() x15;
+  List<T> Function(int x1, [core.List<core.int> x])
+      Function<B extends core.int>() x15;
   Function(int x1) Function<B extends core.int>() x16;
   Function(int x, [List<Function> x1]) Function<B extends core.int>() x17;
   Function(int y, {List<T> x}) Function<B extends core.int>() x18;
   void Function([List<Function> x]) Function<B extends core.int>() x19;
   void Function(List<T> x1) Function<B extends core.int>() x20;
   List<Function> Function<A>(Function x) Function<B extends core.int>() x21;
   Function<A>(List<Function> x) Function<B extends core.int>() x22;
   void Function<A>(core.List<core.int> x) Function<B extends core.int>() x23;
 
   U2({this.tIsBool: false, this.tIsInt: false})
@@ skipping 101 matching lines @@
     x1 = confuse(m1);
     l1 = confuse(m1);
     if (!tIsBool) {
       Expect.isTrue(f1 is F1<int>);
       Expect.isFalse(f1 is F1<bool>);
       Expect.isTrue(confuse(f1) is F1<int>);
       Expect.isFalse(confuse(f1) is F1<bool>);
       Expect.equals(tIsDynamic, m1 is F1<bool>);
       Expect.equals(tIsDynamic, confuse(m1) is F1<bool>);
     } else {
-      if (inCheckedMode) {
+      if (typeAssertionsEnabled) {
         Expect.throws(() {
           x1 = (f1 as dynamic);
         });
         Expect.throws(() {
           x1 = confuse(f1);
         });
         Function Function(int x0, [List<T> x]) l1;
         Expect.throws(() {
           l1 = (f1 as dynamic);
         });
@@ skipping 113 matching lines @@
     int Function([core.List<core.int> x]) Function<B extends core.int>() l6;
     // The static function f6 sets `T` to `int`.
     if (!tIsBool) {
       x6 = f6 as dynamic;
       l6 = f6 as dynamic;
       x6 = confuse(f6);
       l6 = confuse(f6);
     }
 
     Expect.isTrue(m6 is F6);
-    Expect.isTrue(m6 is int Function(
-        [core.List<core.int> x]) Function<B extends core.int>());
+    Expect.isTrue(m6 is int Function([core.List<core.int> x])
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m6) is F6);
     // In checked mode, verifies the type.
     x6 = m6;
     l6 = m6;
     x6 = confuse(m6);
     l6 = confuse(m6);
   }
 
   /// Function Function(int y, [int x]) Function<B extends core.int>()
   void testF7() {
@@ skipping 18 matching lines @@
     l7 = m7;
     x7 = confuse(m7);
     l7 = confuse(m7);
   }
 
   /// Function Function(int x2, [List<Function> x3]) Function<B extends core.int>()
   void testF8() {
     Expect.isTrue(f8 is F8);
     Expect.isTrue(confuse(f8) is F8);
     // In checked mode, verifies the type.
-    Function Function(int x2,
-        [List<Function> x3]) Function<B extends core.int>() l8;
+    Function Function(int x2, [List<Function> x3])
+        Function<B extends core.int>() l8;
     // The static function f8 sets `T` to `int`.
     if (!tIsBool) {
       x8 = f8 as dynamic;
       l8 = f8 as dynamic;
       x8 = confuse(f8);
       l8 = confuse(f8);
     }
 
     Expect.isTrue(m8 is F8);
-    Expect.isTrue(m8 is Function Function(int x2,
-        [List<Function> x3]) Function<B extends core.int>());
+    Expect.isTrue(m8 is Function Function(int x2, [List<Function> x3])
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m8) is F8);
     // In checked mode, verifies the type.
     x8 = m8;
     l8 = m8;
     x8 = confuse(m8);
     l8 = confuse(m8);
   }
 
   /// Function Function(int x1, {List<T> x}) Function<B extends core.int>()
   void testF9() {
     Expect.isTrue(f9 is F9);
     Expect.isTrue(confuse(f9) is F9);
     // In checked mode, verifies the type.
     Function Function(int x1, {List<T> x}) Function<B extends core.int>() l9;
     // The static function f9 sets `T` to `int`.
     if (!tIsBool) {
       x9 = f9 as dynamic;
       l9 = f9 as dynamic;
       x9 = confuse(f9);
       l9 = confuse(f9);
     }
 
     Expect.isTrue(m9 is F9);
-    Expect.isTrue(m9 is Function Function(int x1,
-        {List<T> x}) Function<B extends core.int>());
+    Expect.isTrue(m9 is Function Function(int x1, {List<T> x})
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m9) is F9);
     // In checked mode, verifies the type.
     x9 = m9;
     l9 = m9;
     x9 = confuse(m9);
     l9 = confuse(m9);
     if (!tIsBool) {
       Expect.isTrue(f9 is F9<int>);
       Expect.isFalse(f9 is F9<bool>);
       Expect.isTrue(confuse(f9) is F9<int>);
       Expect.isFalse(confuse(f9) is F9<bool>);
       Expect.equals(tIsDynamic, m9 is F9<bool>);
       Expect.equals(tIsDynamic, confuse(m9) is F9<bool>);
     } else {
-      if (inCheckedMode) {
+      if (typeAssertionsEnabled) {
         Expect.throws(() {
           x9 = (f9 as dynamic);
         });
         Expect.throws(() {
           x9 = confuse(f9);
         });
         Function Function(int x1, {List<T> x}) Function<B extends core.int>()
             l9;
         Expect.throws(() {
           l9 = (f9 as dynamic);
@@ skipping 19 matching lines @@
         l10;
     // The static function f10 sets `T` to `int`.
     if (!tIsBool) {
       x10 = f10 as dynamic;
       l10 = f10 as dynamic;
       x10 = confuse(f10);
       l10 = confuse(f10);
     }
 
     Expect.isTrue(m10 is F10);
-    Expect.isTrue(m10 is List<Function> Function(
-        List<Function> x) Function<B extends core.int>());
+    Expect.isTrue(m10 is List<Function> Function(List<Function> x)
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m10) is F10);
     // In checked mode, verifies the type.
     x10 = m10;
     l10 = m10;
     x10 = confuse(m10);
     l10 = confuse(m10);
   }
 
   /// List<Function> Function(int y, [List<T> x]) Function<B extends core.int>()
   void testF11() {
     Expect.isTrue(f11 is F11);
     Expect.isTrue(confuse(f11) is F11);
     // In checked mode, verifies the type.
     List<Function> Function(int y, [List<T> x]) Function<B extends core.int>()
         l11;
     // The static function f11 sets `T` to `int`.
     if (!tIsBool) {
       x11 = f11 as dynamic;
       l11 = f11 as dynamic;
       x11 = confuse(f11);
       l11 = confuse(f11);
     }
 
     Expect.isTrue(m11 is F11);
-    Expect.isTrue(m11 is List<Function> Function(int y,
-        [List<T> x]) Function<B extends core.int>());
+    Expect.isTrue(m11 is List<Function> Function(int y, [List<T> x])
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m11) is F11);
     // In checked mode, verifies the type.
     x11 = m11;
     l11 = m11;
     x11 = confuse(m11);
     l11 = confuse(m11);
     if (!tIsBool) {
       Expect.isTrue(f11 is F11<int>);
       Expect.isFalse(f11 is F11<bool>);
       Expect.isTrue(confuse(f11) is F11<int>);
       Expect.isFalse(confuse(f11) is F11<bool>);
       Expect.equals(tIsDynamic, m11 is F11<bool>);
       Expect.equals(tIsDynamic, confuse(m11) is F11<bool>);
     } else {
-      if (inCheckedMode) {
+      if (typeAssertionsEnabled) {
         Expect.throws(() {
           x11 = (f11 as dynamic);
         });
         Expect.throws(() {
           x11 = confuse(f11);
         });
-        List<Function> Function(int y,
-            [List<T> x]) Function<B extends core.int>() l11;
+        List<Function> Function(int y, [List<T> x])
+            Function<B extends core.int>() l11;
         Expect.throws(() {
           l11 = (f11 as dynamic);
         });
         Expect.throws(() {
           l11 = confuse(f11);
         });
       }
       List<Function> Function(int y, [List<T> x]) Function<B extends core.int>()
           l11 = m11;
       // In checked mode, verifies the type.
@@ skipping 11 matching lines @@
         l12;
     // The static function f12 sets `T` to `int`.
     if (!tIsBool) {
       x12 = f12 as dynamic;
       l12 = f12 as dynamic;
       x12 = confuse(f12);
       l12 = confuse(f12);
     }
 
     Expect.isTrue(m12 is F12);
-    Expect.isTrue(m12 is core.List<core.int> Function(
-        [Function x1]) Function<B extends core.int>());
+    Expect.isTrue(m12 is core.List<core.int> Function([Function x1])
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m12) is F12);
     // In checked mode, verifies the type.
     x12 = m12;
     l12 = m12;
     x12 = confuse(m12);
     l12 = confuse(m12);
   }
 
   /// core.List<core.int> Function({core.List<core.int> x}) Function<B extends core.int>()
   void testF13() {
     Expect.isTrue(f13 is F13);
     Expect.isTrue(confuse(f13) is F13);
     // In checked mode, verifies the type.
-    core.List<core.int> Function(
-        {core.List<core.int> x}) Function<B extends core.int>() l13;
+    core.List<core.int> Function({core.List<core.int> x})
+        Function<B extends core.int>() l13;
     // The static function f13 sets `T` to `int`.
     if (!tIsBool) {
       x13 = f13 as dynamic;
       l13 = f13 as dynamic;
       x13 = confuse(f13);
       l13 = confuse(f13);
     }
 
     Expect.isTrue(m13 is F13);
-    Expect.isTrue(m13 is core.List<core.int> Function(
-        {core.List<core.int> x}) Function<B extends core.int>());
+    Expect.isTrue(m13 is core.List<core.int> Function({core.List<core.int> x})
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m13) is F13);
     // In checked mode, verifies the type.
     x13 = m13;
     l13 = m13;
     x13 = confuse(m13);
     l13 = confuse(m13);
   }
 
   /// List<T> Function(int y, {int x}) Function<B extends core.int>()
   void testF14() {
@@ skipping 19 matching lines @@
     x14 = confuse(m14);
     l14 = confuse(m14);
     if (!tIsBool) {
       Expect.isTrue(f14 is F14<int>);
       Expect.isFalse(f14 is F14<bool>);
       Expect.isTrue(confuse(f14) is F14<int>);
       Expect.isFalse(confuse(f14) is F14<bool>);
       Expect.equals(tIsDynamic, m14 is F14<bool>);
       Expect.equals(tIsDynamic, confuse(m14) is F14<bool>);
     } else {
-      if (inCheckedMode) {
+      if (typeAssertionsEnabled) {
         Expect.throws(() {
           x14 = (f14 as dynamic);
         });
         Expect.throws(() {
           x14 = confuse(f14);
         });
         List<T> Function(int y, {int x}) Function<B extends core.int>() l14;
         Expect.throws(() {
           l14 = (f14 as dynamic);
         });
         Expect.throws(() {
           l14 = confuse(f14);
         });
       }
       List<T> Function(int y, {int x}) Function<B extends core.int>() l14 = m14;
       // In checked mode, verifies the type.
       x14 = m14;
       x14 = confuse(m14);
     }
   }
 
   /// List<T> Function(int x1, [core.List<core.int> x]) Function<B extends core.int>()
   void testF15() {
     Expect.isTrue(f15 is F15);
     Expect.isTrue(confuse(f15) is F15);
     // In checked mode, verifies the type.
-    List<T> Function(int x1,
-        [core.List<core.int> x]) Function<B extends core.int>() l15;
+    List<T> Function(int x1, [core.List<core.int> x])
+        Function<B extends core.int>() l15;
     // The static function f15 sets `T` to `int`.
     if (!tIsBool) {
       x15 = f15 as dynamic;
       l15 = f15 as dynamic;
       x15 = confuse(f15);
       l15 = confuse(f15);
     }
 
     Expect.isTrue(m15 is F15);
-    Expect.isTrue(m15 is List<T> Function(int x1,
-        [core.List<core.int> x]) Function<B extends core.int>());
+    Expect.isTrue(m15 is List<T> Function(int x1, [core.List<core.int> x])
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m15) is F15);
     // In checked mode, verifies the type.
     x15 = m15;
     l15 = m15;
     x15 = confuse(m15);
     l15 = confuse(m15);
     if (!tIsBool) {
       Expect.isTrue(f15 is F15<int>);
       Expect.isFalse(f15 is F15<bool>);
       Expect.isTrue(confuse(f15) is F15<int>);
       Expect.isFalse(confuse(f15) is F15<bool>);
       Expect.equals(tIsDynamic, m15 is F15<bool>);
       Expect.equals(tIsDynamic, confuse(m15) is F15<bool>);
     } else {
-      if (inCheckedMode) {
+      if (typeAssertionsEnabled) {
         Expect.throws(() {
           x15 = (f15 as dynamic);
         });
         Expect.throws(() {
           x15 = confuse(f15);
         });
-        List<T> Function(int x1,
-            [core.List<core.int> x]) Function<B extends core.int>() l15;
+        List<T> Function(int x1, [core.List<core.int> x])
+            Function<B extends core.int>() l15;
         Expect.throws(() {
           l15 = (f15 as dynamic);
         });
         Expect.throws(() {
           l15 = confuse(f15);
         });
       }
-      List<T> Function(int x1,
-          [core.List<core.int> x]) Function<B extends core.int>() l15 = m15;
+      List<T> Function(int x1, [core.List<core.int> x])
+          Function<B extends core.int>() l15 = m15;
       // In checked mode, verifies the type.
       x15 = m15;
       x15 = confuse(m15);
     }
   }
 
   /// Function(int x1) Function<B extends core.int>()
   void testF16() {
     Expect.isTrue(f16 is F16);
     Expect.isTrue(confuse(f16) is F16);
@@ skipping 25 matching lines @@
     Function(int x, [List<Function> x1]) Function<B extends core.int>() l17;
     // The static function f17 sets `T` to `int`.
     if (!tIsBool) {
       x17 = f17 as dynamic;
       l17 = f17 as dynamic;
       x17 = confuse(f17);
       l17 = confuse(f17);
     }
 
     Expect.isTrue(m17 is F17);
-    Expect.isTrue(m17 is Function(int x,
-        [List<Function> x1]) Function<B extends core.int>());
+    Expect.isTrue(m17 is Function(int x, [List<Function> x1])
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m17) is F17);
     // In checked mode, verifies the type.
     x17 = m17;
     l17 = m17;
     x17 = confuse(m17);
     l17 = confuse(m17);
   }
 
   /// Function(int y, {List<T> x}) Function<B extends core.int>()
   void testF18() {
@@ skipping 19 matching lines @@
     x18 = confuse(m18);
     l18 = confuse(m18);
     if (!tIsBool) {
       Expect.isTrue(f18 is F18<int>);
       Expect.isFalse(f18 is F18<bool>);
       Expect.isTrue(confuse(f18) is F18<int>);
       Expect.isFalse(confuse(f18) is F18<bool>);
       Expect.equals(tIsDynamic, m18 is F18<bool>);
       Expect.equals(tIsDynamic, confuse(m18) is F18<bool>);
     } else {
-      if (inCheckedMode) {
+      if (typeAssertionsEnabled) {
         Expect.throws(() {
           x18 = (f18 as dynamic);
         });
         Expect.throws(() {
           x18 = confuse(f18);
         });
         Function(int y, {List<T> x}) Function<B extends core.int>() l18;
         Expect.throws(() {
           l18 = (f18 as dynamic);
         });
@@ skipping 16 matching lines @@
     void Function([List<Function> x]) Function<B extends core.int>() l19;
     // The static function f19 sets `T` to `int`.
     if (!tIsBool) {
       x19 = f19 as dynamic;
       l19 = f19 as dynamic;
       x19 = confuse(f19);
       l19 = confuse(f19);
     }
 
     Expect.isTrue(m19 is F19);
-    Expect.isTrue(m19 is void Function(
-        [List<Function> x]) Function<B extends core.int>());
+    Expect.isTrue(m19 is void Function([List<Function> x])
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m19) is F19);
     // In checked mode, verifies the type.
     x19 = m19;
     l19 = m19;
     x19 = confuse(m19);
     l19 = confuse(m19);
   }
 
   /// void Function(List<T> x1) Function<B extends core.int>()
   void testF20() {
@@ skipping 19 matching lines @@
     x20 = confuse(m20);
     l20 = confuse(m20);
     if (!tIsBool) {
       Expect.isTrue(f20 is F20<int>);
       Expect.isFalse(f20 is F20<bool>);
       Expect.isTrue(confuse(f20) is F20<int>);
       Expect.isFalse(confuse(f20) is F20<bool>);
       Expect.equals(tIsDynamic, m20 is F20<bool>);
       Expect.equals(tIsDynamic, confuse(m20) is F20<bool>);
     } else {
-      if (inCheckedMode) {
+      if (typeAssertionsEnabled) {
         Expect.throws(() {
           x20 = (f20 as dynamic);
         });
         Expect.throws(() {
           x20 = confuse(f20);
         });
         void Function(List<T> x1) Function<B extends core.int>() l20;
         Expect.throws(() {
           l20 = (f20 as dynamic);
         });
@@ skipping 16 matching lines @@
     List<Function> Function<A>(Function x) Function<B extends core.int>() l21;
     // The static function f21 sets `T` to `int`.
     if (!tIsBool) {
       x21 = f21 as dynamic;
       l21 = f21 as dynamic;
       x21 = confuse(f21);
       l21 = confuse(f21);
     }
 
     Expect.isTrue(m21 is F21);
-    Expect.isTrue(m21 is List<Function> Function<A>(
-        Function x) Function<B extends core.int>());
+    Expect.isTrue(m21 is List<Function> Function<A>(Function x)
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m21) is F21);
     // In checked mode, verifies the type.
     x21 = m21;
     l21 = m21;
     x21 = confuse(m21);
     l21 = confuse(m21);
   }
 
   /// Function<A>(List<Function> x) Function<B extends core.int>()
   void testF22() {
@@ skipping 28 matching lines @@
     void Function<A>(core.List<core.int> x) Function<B extends core.int>() l23;
     // The static function f23 sets `T` to `int`.
     if (!tIsBool) {
       x23 = f23 as dynamic;
       l23 = f23 as dynamic;
       x23 = confuse(f23);
       l23 = confuse(f23);
     }
 
     Expect.isTrue(m23 is F23);
-    Expect.isTrue(m23 is void Function<A>(
-        core.List<core.int> x) Function<B extends core.int>());
+    Expect.isTrue(m23 is void Function<A>(core.List<core.int> x)
+        Function<B extends core.int>());
     Expect.isTrue(confuse(m23) is F23);
     // In checked mode, verifies the type.
     x23 = m23;
     l23 = m23;
     x23 = confuse(m23);
     l23 = confuse(m23);
   }
 }
 
 void main() {
   new U2().runTests();
   new U2<int>(tIsInt: true).runTests();
   new U2<bool>(tIsBool: true).runTests();
 }