Added ServiceRegistry interface

sky/viewer/document_view.cc

Index: sky/viewer/document_view.cc
diff --git a/sky/viewer/document_view.cc b/sky/viewer/document_view.cc
index cb3e3edc1c07631a3770456edc2c64960076b7bb..8adb9930061c923b4c282f90621ec877580d7f10 100644
--- a/sky/viewer/document_view.cc
+++ b/sky/viewer/document_view.cc
@@ -103,6 +103,7 @@ DocumentView::DocumentView(
     mojo::Shell* shell)
     : response_(response.Pass()),
       exported_services_(services.Pass()),
+      imported_services_(exported_services.Pass()),
       shell_(shell),
       web_view_(nullptr),
       root_(nullptr),
@@ -110,6 +111,7 @@ DocumentView::DocumentView(
       bitmap_rasterizer_(nullptr),
       weak_factory_(this) {
   exported_services_.AddService(&view_manager_client_factory_);
+  InitServiceRegistry();
 }
 
 DocumentView::~DocumentView() {
@@ -194,6 +196,10 @@ mojo::ScopedMessagePipeHandle DocumentView::TakeServicesProvidedByEmbedder() {
   return services_provided_by_embedder_.PassMessagePipe();
 }
 
+mojo::ScopedMessagePipeHandle DocumentView::TakeServiceRegistry() {
+  return service_registry_.PassMessagePipe();
+}
+
 mojo::Shell* DocumentView::GetShell() {
   return shell_;
 }
@@ -360,4 +366,16 @@ void DocumentView::StartDebuggerInspectorBackend() {
   // FIXME: Do we need this for dart?
 }
 
+void DocumentView::InitServiceRegistry() {
+  mojo::ConnectToService(imported_services_.get(), &service_registry_);
+  mojo::Array<mojo::String> interface_names(1);
+  interface_names[0] = "ViewManagerClient";
+  mojo::ServiceProviderImpl* sp_impl(new mojo::ServiceProviderImpl());
+  sp_impl->AddService(&view_manager_client_factory_);
+  mojo::ServiceProviderPtr sp;
+  service_registry_service_provider_binding_.reset(
+      new mojo::StrongBinding<mojo::ServiceProvider>(sp_impl, &sp));
+  service_registry_->AddServices(interface_names.Pass(), sp.Pass());
+}
+
 }  // namespace sky