Mojo: more idiomatic C++ bindings

mojo/public/cpp/bindings/type_converter.h

Index: mojo/public/cpp/bindings/type_converter.h
diff --git a/mojo/public/cpp/bindings/type_converter.h b/mojo/public/cpp/bindings/type_converter.h
index 83597747c55d2887b8ca1531a328ab448fd02730..12ddc4f0698ca4615fac01befa02c184e925716e 100644
--- a/mojo/public/cpp/bindings/type_converter.h
+++ b/mojo/public/cpp/bindings/type_converter.h
@@ -112,14 +112,16 @@ namespace mojo {
 // please use them wisely.
 template <typename T, typename U> class TypeConverter;
 
-}  // namespace mojo
-
-#define MOJO_ALLOW_IMPLICIT_TYPE_CONVERSION() \
-  static void AssertAllowImplicitTypeConversion() {}
-
-#define MOJO_INHERIT_IMPLICIT_TYPE_CONVERSION(T, U) \
-  static void AssertAllowImplicitTypeConversion() { \
-    TypeConverter<T, U>::AssertAllowImplicitTypeConversion(); \
+template <typename T> class TypeConverter<T, T> {
+ public:
+  static T ConvertFrom(const T& obj) {
+    return obj;
   }
+  static T ConvertTo(const T& obj) {
+    return obj;
+  }
+};
+
+}  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_TYPE_CONVERTER_H_