dart2js cps: Replace interceptor calls with interceptor constants.

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

Index: pkg/compiler/lib/src/js_backend/codegen/codegen.dart
diff --git a/pkg/compiler/lib/src/js_backend/codegen/codegen.dart b/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
index 7dced8a008409eaf6b2ed38629ec87217c35e5ff..3d4323eb1464e30105b5a145ae96aa493a2edbfc 100644
--- a/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
+++ b/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
@@ -226,10 +226,6 @@ class CodeGenerator extends tree_ir.StatementVisitor
         sourceInformation: node.sourceInformation);
   }
 
-  js.Expression compileConstant(ParameterElement parameter) {
-    return buildConstant(glue.getConstantValueForVariable(parameter));
-  }
-
   js.Expression buildStaticInvoke(Element target,
                                   List<js.Expression> arguments,
                                   {SourceInformation sourceInformation}) {