Allow constructing {Interface,Struct}Ptr from nullptr

mojo/public/cpp/bindings/tests/container_test_util.h

Index: mojo/public/cpp/bindings/tests/container_test_util.h
diff --git a/mojo/public/cpp/bindings/tests/container_test_util.h b/mojo/public/cpp/bindings/tests/container_test_util.h
index 1c3e5eef6de7dc7a3f2bea9c23fd2b06c71482e0..1e29d225cd70adcd792022e9086e5727a0b3a266 100644
--- a/mojo/public/cpp/bindings/tests/container_test_util.h
+++ b/mojo/public/cpp/bindings/tests/container_test_util.h
@@ -28,12 +28,12 @@ class CopyableType {
 };
 
 class MoveOnlyType {
-  MOJO_MOVE_ONLY_TYPE_FOR_CPP_03(MoveOnlyType, RValue)
+  MOJO_MOVE_ONLY_TYPE(MoveOnlyType)
  public:
   typedef MoveOnlyType Data_;
   MoveOnlyType();
-  MoveOnlyType(RValue other);
-  MoveOnlyType& operator=(RValue other);
+  MoveOnlyType(MoveOnlyType&& other);
+  MoveOnlyType& operator=(MoveOnlyType&& other);
   ~MoveOnlyType();
 
   bool moved() const { return moved_; }