dart2js cps: Support --trust-primitives and --trust-type-annotations.

pkg/compiler/lib/src/js_backend/codegen/task.dart

 // Copyright (c) 2014, 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.
 
 /// Generate code using the cps-based IR pipeline.
 library code_generator_task;
 
 import 'glue.dart';
 import 'codegen.dart';
 import 'unsugar.dart';
@@ skipping 116 matching lines @@
   void applyCpsPass(cps_opt.Pass pass, cps.FunctionDefinition cpsFunction) {
     cpsOptimizationTask.measureSubtask(pass.passName, () {
       pass.rewrite(cpsFunction);
     });
     traceGraph(pass.passName, cpsFunction);
     dumpTypedIr(pass.passName, cpsFunction);
     assert(checkCpsIntegrity(cpsFunction, pass.passName));
   }
 
   cps.FunctionDefinition compileToCpsIr(AstElement element) {
-    cps.FunctionDefinition cpsFunction = cpsBuilderTask.buildNode(element);
+    cps.FunctionDefinition cpsFunction =
+        cpsBuilderTask.buildNode(element, typeSystem);
     if (cpsFunction == null) {
       if (cpsBuilderTask.bailoutMessage == null) {
         giveUp('unable to build cps definition of $element');
       } else {
         giveUp(cpsBuilderTask.bailoutMessage);
       }
     }
     ParentVisitor.setParents(cpsFunction);
     traceGraph('IR Builder', cpsFunction);
     dumpTypedIr('IR Builder', cpsFunction);
@@ skipping 130 matching lines @@
         treeOptimizationTask]
       ..addAll(fallbackCompiler.tasks);
   }
 
   js.Node attachPosition(js.Node node, AstElement element) {
     return node.withSourceInformation(
         sourceInformationFactory.createBuilderForContext(element)
             .buildDeclaration(element));
   }
 }