Remove Compiler access from ResolutionEnqueuer

tests/compiler/dart2js/type_inference8_test.dart

 // Copyright (c) 2015, 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.
 
 import "package:async_helper/async_helper.dart";
 import "package:compiler/src/constants/values.dart";
 import "package:compiler/src/types/types.dart";
 import "package:expect/expect.dart";
 import 'compiler_helper.dart';
 import 'type_mask_test_helper.dart';
@@ skipping 16 matching lines @@
 main() {
   bar(foo(false));
   bar(foo(foo(false)));
 }
 """;
 
 Future runTest1() {
   Uri uri = new Uri(scheme: 'source');
   var compiler = compilerFor(TEST1, uri);
   return compiler.run(uri).then((_) {
-    var commonMasks = compiler.commonMasks;
-    var typesInferrer = compiler.globalInference.typesInferrer;
+    var commonMasks = compiler.closedWorld.commonMasks;
+    var typesInferrer = compiler.globalInference.typesInferrerInternal;
     var element = findElement(compiler, "foo");
     var mask = typesInferrer.getReturnTypeOfElement(element);
     var falseType =
         new ValueTypeMask(commonMasks.boolType, new FalseConstantValue());
     // 'foo' should always return false
     Expect.equals(falseType, mask);
     // the argument to 'bar' is always false
     var bar = findElement(compiler, "bar");
     var barArg = bar.parameters.first;
     var barArgMask = typesInferrer.getTypeOfElement(barArg);
@@ skipping 21 matching lines @@
 main() {
   bar(foo(5));
   bar(foo(6));
 }
 """;
 
 Future runTest2() {
   Uri uri = new Uri(scheme: 'source');
   var compiler = compilerFor(TEST2, uri);
   return compiler.run(uri).then((_) {
-    var commonMasks = compiler.commonMasks;
-    var typesInferrer = compiler.globalInference.typesInferrer;
+    var commonMasks = compiler.closedWorld.commonMasks;
+    var typesInferrer = compiler.globalInference.typesInferrerInternal;
     var element = findElement(compiler, "foo");
     var mask = typesInferrer.getReturnTypeOfElement(element);
     // Can't infer value for foo's return type, it could be either true or false
     Expect.identical(commonMasks.boolType, mask);
     var bar = findElement(compiler, "bar");
     var barArg = bar.parameters.first;
     var barArgMask = typesInferrer.getTypeOfElement(barArg);
     // The argument to bar should have the same type as the return type of foo
     Expect.identical(commonMasks.boolType, barArgMask);
     var barCode = compiler.backend.getGeneratedCode(bar);
     Expect.isTrue(barCode.contains('"bbb"'));
     // Still must output the print for "aaa"
     Expect.isTrue(barCode.contains('"aaa"'));
   });
 }
 
 main() {
   asyncStart();
   runTest1().then((_) {
     return runTest2();
   }).whenComplete(asyncEnd);
 }