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

tests/language/function_type/function_type9_test.dart

Index: tests/language/function_type/function_type9_test.dart
diff --git a/tests/language/function_type/function_type9_test.dart b/tests/language/function_type/function_type9_test.dart
index a2c7e6f3c207d81bd7f8cdbdedeb2ff6ec5bc2e7..c99e395f84f8666e8fba6e77ec5a0b0d8c50a273 100644
--- a/tests/language/function_type/function_type9_test.dart
+++ b/tests/language/function_type/function_type9_test.dart
@@ -19,61 +19,34 @@ import 'package:expect/expect.dart';
 @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(int x, [List<Function> x2]);
-typedef F4<T>
-    = List<Function> Function<A>(Function x);
-typedef F5<T>
-    = int Function(Function x) Function(int x);
-typedef F6<T>
-    = int Function(int y, [core.List<core.int> x]) Function(int x);
-typedef F7<T>
-    = Function Function([int x1]) Function(int x);
-typedef F8<T>
-    = Function Function({List<Function> x}) Function(int x);
-typedef F9<T>
-    = Function Function() Function(int x);
-typedef F10<T>
-    = List<Function> Function(int x1, [List<Function> x]) Function(int x);
-typedef F11<T>
-    = List<Function> Function([List<T> x1]) Function(int x);
-typedef F12<T>
-    = core.List<core.int> Function(int x, [Function x1]) Function(int x);
-typedef F13<T>
-    = core.List<core.int> Function(int y, {core.List<core.int> x}) Function(
-        int x);
-typedef F14<T>
-    = List<T> Function([Function x]) Function(int x);
-typedef F15<T>
-    = List<T> Function(core.List<core.int> x1) Function(int x);
-typedef F16<T>
-    = Function(int x2, [int x3]) Function(int x);
-typedef F17<T>
-    = Function(int x1, {List<Function> x}) Function(int x);
-typedef F18<T>
-    = void Function(int x) Function(int x);
-typedef F19<T>
-    = void Function(int y, [List<Function> x]) Function(int x);
-typedef F20<T>
-    = void Function(int x2, [List<T> x3]) Function(int x);
-typedef F21<T>
-    = List<Function> Function<A>(core.List<core.int> x) Function(int x);
-typedef F22<T>
-    = Function<A>(List<T> x) Function(int x);
-typedef F23<T>
-    = void Function<A>() Function(int x);
+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(int x, [List<Function> x2]);
+typedef F4<T> = List<Function> Function<A>(Function x);
+typedef F5<T> = int Function(Function x) Function(int x);
+typedef F6<T> = int Function(int y, [core.List<core.int> x]) Function(int x);
+typedef F7<T> = Function Function([int x1]) Function(int x);
+typedef F8<T> = Function Function({List<Function> x}) Function(int x);
+typedef F9<T> = Function Function() Function(int x);
+typedef F10<T> = List<Function> Function(int x1, [List<Function> x]) Function(
+    int x);
+typedef F11<T> = List<Function> Function([List<T> x1]) Function(int x);
+typedef F12<T> = core.List<core.int> Function(int x, [Function x1]) Function(
+    int x);
+typedef F13<T> = core.List<core.int> Function(int y, {core.List<core.int> x})
+    Function(int x);
+typedef F14<T> = List<T> Function([Function x]) Function(int x);
+typedef F15<T> = List<T> Function(core.List<core.int> x1) Function(int x);
+typedef F16<T> = Function(int x2, [int x3]) Function(int x);
+typedef F17<T> = Function(int x1, {List<Function> x}) Function(int x);
+typedef F18<T> = void Function(int x) Function(int x);
+typedef F19<T> = void Function(int y, [List<Function> x]) Function(int x);
+typedef F20<T> = void Function(int x2, [List<T> x3]) Function(int x);
+typedef F21<T> = List<Function> Function<A>(core.List<core.int> x) Function(
+    int x);
+typedef F22<T> = Function<A>(List<T> x) Function(int x);
+typedef F23<T> = void Function<A>() Function(int x);
 
 int f0(int x0, {int x}) => null;
 Function f1(int x0, {List<int> x}) => null;
@@ -241,7 +214,7 @@ class U9<T> {
       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);
         });
@@ -471,8 +444,8 @@ class U9<T> {
     }
 
     Expect.isTrue(m10 is F10);
-    Expect.isTrue(m10 is List<Function> Function(int x1,
-        [List<Function> x]) Function(int x));
+    Expect.isTrue(m10 is List<Function> Function(int x1, [List<Function> x])
+        Function(int x));
     Expect.isTrue(confuse(m10) is F10);
     // In checked mode, verifies the type.
     x10 = m10;
@@ -511,7 +484,7 @@ class U9<T> {
       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);
         });
@@ -548,8 +521,8 @@ class U9<T> {
     }
 
     Expect.isTrue(m12 is F12);
-    Expect.isTrue(m12 is core.List<core.int> Function(int x,
-        [Function x1]) Function(int x));
+    Expect.isTrue(m12 is core.List<core.int> Function(int x, [Function x1])
+        Function(int x));
     Expect.isTrue(confuse(m12) is F12);
     // In checked mode, verifies the type.
     x12 = m12;
@@ -575,7 +548,8 @@ class U9<T> {
 
     Expect.isTrue(m13 is F13);
     Expect.isTrue(m13 is core.List<core.int> Function(int y,
-        {core.List<core.int> x}) Function(int x));
+            {core.List<core.int> x})
+        Function(int x));
     Expect.isTrue(confuse(m13) is F13);
     // In checked mode, verifies the type.
     x13 = m13;
@@ -614,7 +588,7 @@ class U9<T> {
       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);
         });
@@ -667,7 +641,7 @@ class U9<T> {
       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);
         });
@@ -816,7 +790,7 @@ class U9<T> {
       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);
         });
@@ -853,8 +827,8 @@ class U9<T> {
     }
 
     Expect.isTrue(m21 is F21);
-    Expect.isTrue(m21 is List<Function> Function<A>(
-        core.List<core.int> x) Function(int x));
+    Expect.isTrue(m21 is List<Function> Function<A>(core.List<core.int> x)
+        Function(int x));
     Expect.isTrue(confuse(m21) is F21);
     // In checked mode, verifies the type.
     x21 = m21;
@@ -893,7 +867,7 @@ class U9<T> {
       Expect.equals(tIsDynamic, m22 is F22<bool>);
       Expect.equals(tIsDynamic, confuse(m22) is F22<bool>);
     } else {
-      if (inCheckedMode) {
+      if (typeAssertionsEnabled) {
         Expect.throws(() {
           x22 = (f22 as dynamic);
         });