Add type info to JSArray.

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 acb23bf4450d6b7e73450431b18f4396f390b065..1c92ff5eeb37ce8a02944a23a3696e527dddb585 100644
--- a/pkg/compiler/lib/src/tree_ir/optimization/statement_rewriter.dart
+++ b/pkg/compiler/lib/src/tree_ir/optimization/statement_rewriter.dart
@@ -372,6 +372,7 @@ class StatementRewriter extends Transformer implements Pass {
            exp is CreateInvocationMirror ||
            exp is CreateInstance ||
            exp is CreateBox ||
+           exp is TypeExpression ||
            exp is GetStatic && exp.element.isFunction ||
            exp is Interceptor ||
            exp is ApplyBuiltinOperator ||
@@ -822,6 +823,9 @@ class StatementRewriter extends Transformer implements Pass {
   }
 
   Expression visitCreateInstance(CreateInstance node) {
+    if (node.typeInformation != null) {
+      node.typeInformation = visitExpression(node.typeInformation);
+    }
     _rewriteList(node.arguments);
     return node;
   }