fix(core): keep styles for ViewEncapsulation.Native isolated per component

BREAKING CHANGE:
- `Renderer.registerComponent` now takes an additional argument.

Fixes #4513
Closes #4524

modules/angular2/src/core/linker/proto_view_factory.ts

@@ -71,7 +71,7 @@ export class ProtoViewFactory {
       var compiledTemplateData = cmd.template.getData(this._appId);
 
       this._renderer.registerComponentTemplate(cmd.templateId, compiledTemplateData.commands,
-                                               compiledTemplateData.styles);
+                                               compiledTemplateData.styles, cmd.nativeShadow);
       var boundPipes = this._flattenPipes(view).map(pipe => this._bindPipe(pipe));
 
       nestedProtoView = new AppProtoView(compiledTemplateData.commands, ViewType.COMPONENT, true,