Mojo C++ bindings: custom type mapping of map

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_TESTS_STRUCT_WITH_TRAITS_IMPL_TRAITS_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_TESTS_STRUCT_WITH_TRAITS_IMPL_TRAITS_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 55 matching lines @@
 
   static const test::NestedStructWithTraitsImpl& f_struct(
       const test::StructWithTraitsImpl& value) {
     return value.get_struct();
   }
 
   static const std::vector<test::NestedStructWithTraitsImpl>& f_struct_array(
       const test::StructWithTraitsImpl& value) {
     return value.get_struct_array();
   }
+
+  static const std::map<std::string, test::NestedStructWithTraitsImpl>&
+  f_struct_map(const test::StructWithTraitsImpl& value) {
+    return value.get_struct_map();
+  }
 };
 
 template <>
 struct StructTraits<test::PassByValueStructWithTraits,
                     test::PassByValueStructWithTraitsImpl> {
   // Deserialization to test::PassByValueStructTraitsImpl.
   static bool Read(test::PassByValueStructWithTraitsDataView data,
                    test::PassByValueStructWithTraitsImpl* out);
 
   // Fields in test::PassByValueStructWithTraits.
   // See src/mojo/public/interfaces/bindings/tests/struct_with_traits.mojom.
   static ScopedHandle& f_handle(test::PassByValueStructWithTraitsImpl& value) {
     return value.get_mutable_handle();
   }
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_TESTS_STRUCT_WITH_TRAITS_IMPL_TRAITS_H_