Make use of CreateInterfacePtrAndBind() where appropriate

mojo/shell/application_instance.cc

Index: mojo/shell/application_instance.cc
diff --git a/mojo/shell/application_instance.cc b/mojo/shell/application_instance.cc
index 8c3003dd60ea0f97dbfb77668d46abae05334213..8f4ce1b8ea2c1cff8853449301ba55d890c22f69 100644
--- a/mojo/shell/application_instance.cc
+++ b/mojo/shell/application_instance.cc
@@ -53,10 +53,9 @@ ApplicationInstance::~ApplicationInstance() {
 }
 
 void ApplicationInstance::InitializeApplication() {
-  ShellPtr shell;
-  binding_.Bind(GetProxy(&shell));
+  application_->Initialize(binding_.CreateInterfacePtrAndBind(),
+                           identity_.url().spec());
   binding_.set_connection_error_handler([this]() { OnConnectionError(); });
-  application_->Initialize(std::move(shell), identity_.url().spec());
 }
 
 void ApplicationInstance::ConnectToClient(