mojo: MessageReceiver*::AcceptWithResponder() now take a unique_ptr to the responder

mojo/public/tools/bindings/generators/cpp_templates/interface_stub_declaration.tmpl

Index: mojo/public/tools/bindings/generators/cpp_templates/interface_stub_declaration.tmpl
diff --git a/mojo/public/tools/bindings/generators/cpp_templates/interface_stub_declaration.tmpl b/mojo/public/tools/bindings/generators/cpp_templates/interface_stub_declaration.tmpl
index 9f01348cdf5fbde97fffc8c3059d2aefe87cf9d0..79ab46f3373e914e64785136f9d5599a1ade5317 100644
--- a/mojo/public/tools/bindings/generators/cpp_templates/interface_stub_declaration.tmpl
+++ b/mojo/public/tools/bindings/generators/cpp_templates/interface_stub_declaration.tmpl
@@ -1,9 +1,10 @@
 class {{export_attribute}} {{interface.name}}StubDispatch {
  public:
   static bool Accept({{interface.name}}* impl, mojo::Message* message);
-  static bool AcceptWithResponder({{interface.name}}* impl,
-                                  mojo::Message* message,
-                                  mojo::MessageReceiverWithStatus* responder);
+  static bool AcceptWithResponder(
+      {{interface.name}}* impl,
+      mojo::Message* message,
+      std::unique_ptr<mojo::MessageReceiverWithStatus> responder);
 };
 
 template <typename ImplRefTraits =
@@ -28,11 +29,11 @@ class {{interface.name}}Stub
 
   bool AcceptWithResponder(
       mojo::Message* message,
-      mojo::MessageReceiverWithStatus* responder) override {
+      std::unique_ptr<mojo::MessageReceiverWithStatus> responder) override {
     if (ImplRefTraits::IsNull(sink_))
       return false;
     return {{interface.name}}StubDispatch::AcceptWithResponder(
-        ImplRefTraits::GetRawPointer(&sink_), message, responder);
+        ImplRefTraits::GetRawPointer(&sink_), message, std::move(responder));
   }
 
  private: