Add NativeClassData/NativeClassDataBuilder

pkg/compiler/lib/src/patch_parser.dart

Index: pkg/compiler/lib/src/patch_parser.dart
diff --git a/pkg/compiler/lib/src/patch_parser.dart b/pkg/compiler/lib/src/patch_parser.dart
index 6546b468ac800d3a870b3b7bd619fbfb7da16917..b1bc05f33dfc71087e55effe87aa3deb3d3a9870 100644
--- a/pkg/compiler/lib/src/patch_parser.dart
+++ b/pkg/compiler/lib/src/patch_parser.dart
@@ -409,7 +409,7 @@ class NativeAnnotationHandler implements EagerAnnotationHandler<String> {
       String native = getNativeAnnotation(annotation);
       if (native != null) {
         JavaScriptBackend backend = compiler.backend;
-        backend.nativeDataBuilder.setNativeClassTagInfo(element, native);
+        backend.nativeClassDataBuilder.setNativeClassTagInfo(element, native);
         return native;
       }
     }
@@ -441,7 +441,7 @@ class JsInteropAnnotationHandler implements EagerAnnotationHandler<bool> {
     bool hasJsInterop = hasJsNameAnnotation(annotation);
     if (hasJsInterop) {
       JavaScriptBackend backend = compiler.backend;
-      backend.nativeDataBuilder.markAsJsInterop(element);
+      backend.nativeClassDataBuilder.markAsJsInterop(element);
     }
     // Due to semantics of apply in the baseclass we have to return null to
     // indicate that no match was found.