dart2js cps: Change interceptor pipeline.

pkg/compiler/lib/src/tree_ir/optimization/statement_rewriter.dart

Index: pkg/compiler/lib/src/tree_ir/optimization/statement_rewriter.dart
diff --git a/pkg/compiler/lib/src/tree_ir/optimization/statement_rewriter.dart b/pkg/compiler/lib/src/tree_ir/optimization/statement_rewriter.dart
index 4949bc9539bc7be5d801f8b105e475eb72de9044..f6b6a729b36f3d31864fc673aec4fb35b86021e9 100644
--- a/pkg/compiler/lib/src/tree_ir/optimization/statement_rewriter.dart
+++ b/pkg/compiler/lib/src/tree_ir/optimization/statement_rewriter.dart
@@ -358,6 +358,8 @@ class StatementRewriter extends Transformer implements Pass {
     return exp is Constant ||
            exp is This ||
            exp is CreateInvocationMirror ||
+           exp is CreateInstance ||
+           exp is CreateBox ||
            exp is GetStatic && exp.element.isFunction ||
            exp is Interceptor ||
            exp is ApplyBuiltinOperator ||