dart2js: Run prepareNativeClasses in the program builder.

pkg/compiler/lib/src/js_emitter/program_builder.dart

Index: pkg/compiler/lib/src/js_emitter/program_builder.dart
diff --git a/pkg/compiler/lib/src/js_emitter/program_builder.dart b/pkg/compiler/lib/src/js_emitter/program_builder.dart
index 4e2f55577e1f5162fdeb4978ad9e506d378751da..d5a24a678e14407c6fbfa662779f5a921a5e10d4 100644
--- a/pkg/compiler/lib/src/js_emitter/program_builder.dart
+++ b/pkg/compiler/lib/src/js_emitter/program_builder.dart
@@ -101,12 +101,23 @@ class ProgramBuilder {
       }
     });
 
+    Map<Class, Map<String, js.Expression>> additionalProperties =
+        new Map<Class, Map<String, js.Expression>>();
+
+    List<Class> nativeNeededClasses =

[herhut, 2015/01/26 13:50:15]

This reads strange. Why not neededNativeClasses?

[floitsch, 2015/01/26 17:50:40]

Done.

+        _task.nativeEmitter.prepareNativeClasses(
+            nativeClasses,
+            additionalProperties);
+
     _markEagerClasses();
 
-    return new Program(outputs,
-                       nativeClasses,
-                       _task.outputContainsConstantList,
-                       _buildLoadMap());
+    return new Program(
+        outputs,
+        nativeNeededClasses,
+        additionalProperties,
+        _buildLoadMap(),
+        outputContainsNativeClasses: nativeNeededClasses.isNotEmpty,
+        outputContainsConstantList: _task.outputContainsConstantList);
   }
 
   void _markEagerClasses() {