Further reduce use of Compiler.closedWorld.

tests/compiler/dart2js/concrete_type_inference_test.dart

Index: tests/compiler/dart2js/concrete_type_inference_test.dart
diff --git a/tests/compiler/dart2js/concrete_type_inference_test.dart b/tests/compiler/dart2js/concrete_type_inference_test.dart
index ce5b556e53583c3015eb1b7c35cdcf4a2085194b..b1905dd2e28c48f2ccdadc8ad6b2893471e72552 100644
--- a/tests/compiler/dart2js/concrete_type_inference_test.dart
+++ b/tests/compiler/dart2js/concrete_type_inference_test.dart
@@ -16,49 +16,50 @@ Future compileAndFind(String code, String name, check(compiler, element)) {
   });
 }
 
-void checkPrintType(String expression, checkType(compiler, type)) {
+void checkPrintType(String expression, checkType(closedWorld, type)) {
   asyncTest(() => compileAndFind('main() { print($expression); }', 'print',
           (compiler, printElement) {
         var parameter = printElement.functionSignature.requiredParameters.first;
-        checkType(compiler, _typeOf(compiler, parameter));
+        checkType(compiler.closedWorld, _typeOf(compiler, parameter));
       }));
 
   asyncTest(() =>
       compileAndFind('main() { var x = print; print($expression); }', 'print',
           (compiler, printElement) {
         var parameter = printElement.functionSignature.requiredParameters.first;
-        checkType(compiler, _typeOf(compiler, parameter));
+        checkType(
+            compiler.closedWorld, _typeOf(compiler, parameter));
       }));
 
   asyncTest(() => compileAndFind(
           'main() { print($expression); print($expression); }', 'print',
           (compiler, printElement) {
         var parameter = printElement.functionSignature.requiredParameters.first;
-        checkType(compiler, _typeOf(compiler, parameter));
+        checkType(compiler.closedWorld, _typeOf(compiler, parameter));
       }));
 }
 
 void testBasicTypes() {
-  checkPrintType('true', (compiler, type) {
+  checkPrintType('true', (closedWorld, type) {
     if (type.isForwarding) type = type.forwardTo;
-    Expect.identical(compiler.closedWorld.commonMasks.boolType, type);
+    Expect.identical(closedWorld.commonMasks.boolType, type);
   });
-  checkPrintType('1.5', (compiler, type) {
-    Expect.identical(compiler.closedWorld.commonMasks.doubleType, type);
+  checkPrintType('1.5', (closedWorld, type) {
+    Expect.identical(closedWorld.commonMasks.doubleType, type);
   });
-  checkPrintType('1', (compiler, type) {
-    Expect.identical(compiler.closedWorld.commonMasks.uint31Type, type);
+  checkPrintType('1', (closedWorld, type) {
+    Expect.identical(closedWorld.commonMasks.uint31Type, type);
   });
-  checkPrintType('[]', (compiler, type) {
+  checkPrintType('[]', (closedWorld, type) {
     if (type.isForwarding) type = type.forwardTo;
-    Expect.identical(compiler.closedWorld.commonMasks.growableListType, type);
+    Expect.identical(closedWorld.commonMasks.growableListType, type);
   });
-  checkPrintType('null', (compiler, type) {
-    Expect.identical(compiler.closedWorld.commonMasks.nullType, type);
+  checkPrintType('null', (closedWorld, type) {
+    Expect.identical(closedWorld.commonMasks.nullType, type);
   });
-  checkPrintType('"foo"', (compiler, type) {
-    Expect.isTrue(compiler.closedWorld.commonMasks.stringType
-        .containsOnlyString(compiler.closedWorld));
+  checkPrintType('"foo"', (closedWorld, type) {
+    Expect.isTrue(
+        closedWorld.commonMasks.stringType.containsOnlyString(closedWorld));
   });
 }