Infer types for compile-time constant closures.

tests/compiler/dart2js/simple_inferrer_const_closure2_test.dart

Index: tests/compiler/dart2js/simple_inferrer_const_closure2_test.dart
diff --git a/tests/compiler/dart2js/simple_inferrer_const_closure_test.dart b/tests/compiler/dart2js/simple_inferrer_const_closure2_test.dart
similarity index 63%
copy from tests/compiler/dart2js/simple_inferrer_const_closure_test.dart
copy to tests/compiler/dart2js/simple_inferrer_const_closure2_test.dart
index 7b7be1a6da440c65728f34c064aa84760dbc9292..d8bdeb37f35c9874dad70544130620c55f3e5987 100644
--- a/tests/compiler/dart2js/simple_inferrer_const_closure_test.dart
+++ b/tests/compiler/dart2js/simple_inferrer_const_closure2_test.dart
@@ -8,28 +8,19 @@ import 'compiler_helper.dart';
 
 const String TEST = """
 
-method1() {
-  return 42;
-}
-
-method2(a) {  // Called only via [foo2] with a small integer.
+method(a) {  // Called via [foo] with integer then double.
   return a;
 }
 
-const foo1 = method1;
-const foo2 = method2;
+const foo = method;
 
-returnInt1() {
-  return foo1();
-}
-
-returnInt2() {
-  return foo2(54);
+returnNum(x) {
+  return foo(x);
 }
 
 main() {
-  returnInt1();
-  returnInt2();
+  returnNum(10);
+  returnNum(10.5);
 }
 """;
 
@@ -47,10 +38,7 @@ void main() {
           name);
     }
 
-    checkReturn('method1', compiler.typesTask.uint31Type);
-    checkReturn('returnInt1', compiler.typesTask.uint31Type);
-
-    checkReturn('method2', compiler.typesTask.uint31Type);
-    checkReturn('returnInt2', compiler.typesTask.uint31Type);
+    checkReturn('method', compiler.typesTask.numType);
+    checkReturn('returnNum', compiler.typesTask.numType);
   }));
 }