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

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

Index: pkg/compiler/lib/src/js_backend/codegen/task.dart
diff --git a/pkg/compiler/lib/src/js_backend/codegen/task.dart b/pkg/compiler/lib/src/js_backend/codegen/task.dart
index 7c0d3eae7641fe682c5607444c601a509f6d6c3b..212178c2ceef741aabded8a8ebbd84d693dc8e50 100644
--- a/pkg/compiler/lib/src/js_backend/codegen/task.dart
+++ b/pkg/compiler/lib/src/js_backend/codegen/task.dart
@@ -134,7 +134,8 @@ class CpsFunctionCompiler implements FunctionCompiler {
   }
 
   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');