Mojo C++ bindings: Generate InterfaceHandle<> instead of InterfacePtr<>.

services/ui/view_manager/view_stub.h

Index: services/ui/view_manager/view_stub.h
diff --git a/services/ui/view_manager/view_stub.h b/services/ui/view_manager/view_stub.h
index db031bb420f56212baad003d49b5cfa1ce007d5b..461d0d74237c12b2ab84e3f63cba87c35559f42a 100644
--- a/services/ui/view_manager/view_stub.h
+++ b/services/ui/view_manager/view_stub.h
@@ -34,7 +34,8 @@ class ViewStub {
   // Begins the process of resolving a view.
   // Invokes |ViewRegistry.OnViewResolved| when the token is obtained
   // from the owner or passes nullptr if an error occurs.
-  ViewStub(ViewRegistry* registry, mojo::ui::ViewOwnerPtr owner);
+  ViewStub(ViewRegistry* registry,
+           mojo::InterfaceHandle<mojo::ui::ViewOwner> owner);
   ~ViewStub();
 
   // Gets the view state referenced by the stub, or null if the view