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diff --git a/grpc/src/core/lib/gprpp/cpp_impl_of.h b/grpc/src/core/lib/gprpp/cpp_impl_of.h
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+// Copyright 2021 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef GRPC_CORE_LIB_GPRPP_CPP_IMPL_OF_H
+#define GRPC_CORE_LIB_GPRPP_CPP_IMPL_OF_H
+
+namespace grpc_core {
+
+// Declares CppType to be the backing implementation of CType.
+// Use via the curiously recursive template:
+// class Foo : public CppImplOf<Foo, grpc_foo> {};
+// Provides casting methods each way.
+// grpc_foo should be `typedef struct grpc_foo grpc_foo` and otherwise
+// not defined.
+template <typename CppType, typename CType>
+class CppImplOf {
+ public:
+  // Convert the C struct to C++
+  static CppType* FromC(CType* c_type) {
+    return reinterpret_cast<CppType*>(c_type);
+  }
+
+  static const CppType* FromC(const CType* c_type) {
+    return reinterpret_cast<const CppType*>(c_type);
+  }
+
+  // Retrieve a c pointer (of the same ownership as this)
+  CType* c_ptr() {
+    return reinterpret_cast<CType*>(static_cast<CppType*>(this));
+  }
+
+ protected:
+  ~CppImplOf() = default;
+};
+
+}  // namespace grpc_core
+
+#endif  // GRPC_CORE_LIB_GPRPP_CPP_IMPL_OF_H