Replace OnConnect with OnBindInterface in //mash.

mash/webtest/webtest.h

Index: mash/webtest/webtest.h
diff --git a/mash/webtest/webtest.h b/mash/webtest/webtest.h
index b031d7a5411a0b1f7f5ba9e12f5724da3369bed2..608e7effbb977307b7ac4c65d3412e0219ebb699 100644
--- a/mash/webtest/webtest.h
+++ b/mash/webtest/webtest.h
@@ -10,6 +10,7 @@
 #include "base/macros.h"
 #include "mash/public/interfaces/launchable.mojom.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
+#include "services/service_manager/public/cpp/binder_registry.h"
 #include "services/service_manager/public/cpp/interface_factory.h"
 #include "services/service_manager/public/cpp/service.h"
 #include "services/tracing/public/cpp/provider.h"
@@ -35,8 +36,9 @@ class Webtest : public service_manager::Service,
  private:
   // service_manager::Service:
   void OnStart() override;
-  bool OnConnect(const service_manager::ServiceInfo& remote_info,
-                 service_manager::InterfaceRegistry* registry) override;
+  void OnBindInterface(const service_manager::ServiceInfo& source_info,
+                       const std::string& interface_name,
+                       mojo::ScopedMessagePipeHandle interface_pipe) override;
 
   // mojom::Launchable:
   void Launch(uint32_t what, mojom::LaunchMode how) override;
@@ -48,6 +50,8 @@ class Webtest : public service_manager::Service,
   mojo::BindingSet<mojom::Launchable> bindings_;
   std::vector<views::Widget*> windows_;
 
+  service_manager::BinderRegistry registry_;
+
   tracing::Provider tracing_;
   std::unique_ptr<views::AuraInit> aura_init_;