dart2js: Access to metadata and types goes through builtins.

pkg/compiler/lib/src/js_emitter/old_emitter/emitter.dart

Index: pkg/compiler/lib/src/js_emitter/old_emitter/emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/old_emitter/emitter.dart b/pkg/compiler/lib/src/js_emitter/old_emitter/emitter.dart
index bcc7977e3e670553270f27bc82353834e27090b5..240c986f6ed899938b219f527cac40d5b34a7398 100644
--- a/pkg/compiler/lib/src/js_emitter/old_emitter/emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/old_emitter/emitter.dart
@@ -306,6 +306,16 @@ class OldEmitter implements Emitter {
         return jsAst.js.expressionTemplateFor(
             "('$isPrefix' + #) in #.prototype");
 
+      case JsBuiltin.getMetadata:
+        String metadataAccess =
+            generateEmbeddedGlobalAccessString(embeddedNames.METADATA);
+        return jsAst.js.expressionTemplateFor("$metadataAccess[#]");
+
+      case JsBuiltin.getType:
+        String typesAccess =
+            generateEmbeddedGlobalAccessString(embeddedNames.TYPES);
+        return jsAst.js.expressionTemplateFor("$typesAccess[#]");
+
       default:
         compiler.internalError(NO_LOCATION_SPANNABLE,
             "Unhandled Builtin: $builtin");