Mojo: more idiomatic C++ bindings

mojo/mojo_public.gypi

Index: mojo/mojo_public.gypi
diff --git a/mojo/mojo_public.gypi b/mojo/mojo_public.gypi
index e1034723b166bfae7e226eb35616a1868b5ae212..4d593a3ac90a8fe2a166508d8984dc0b6f6a5d7b 100644
--- a/mojo/mojo_public.gypi
+++ b/mojo/mojo_public.gypi
@@ -134,6 +134,8 @@
         'public/cpp/bindings/tests/request_response_unittest.cc',
         'public/cpp/bindings/tests/router_unittest.cc',
         'public/cpp/bindings/tests/sample_service_unittest.cc',
+        'public/cpp/bindings/tests/string_unittest.cc',
+        'public/cpp/bindings/tests/struct_unittest.cc',
         'public/cpp/bindings/tests/type_conversion_unittest.cc',
         'public/cpp/bindings/tests/validation_unittest.cc',
       ],
@@ -229,11 +231,13 @@
         'public/cpp/bindings/message_filter.h',
         'public/cpp/bindings/no_interface.h',
         'public/cpp/bindings/passable.h',
+        'public/cpp/bindings/string.h',
         'public/cpp/bindings/sync_dispatcher.h',
         'public/cpp/bindings/type_converter.h',
         'public/cpp/bindings/lib/array.cc',
         'public/cpp/bindings/lib/array_internal.h',
         'public/cpp/bindings/lib/array_internal.cc',
+        'public/cpp/bindings/lib/array_serialization.h',
         'public/cpp/bindings/lib/bindings_internal.h',
         'public/cpp/bindings/lib/bindings_serialization.cc',
         'public/cpp/bindings/lib/bindings_serialization.h',
@@ -263,6 +267,8 @@
         'public/cpp/bindings/lib/scratch_buffer.h',
         'public/cpp/bindings/lib/shared_data.h',
         'public/cpp/bindings/lib/shared_ptr.h',
+        'public/cpp/bindings/lib/string_serialization.h',
+        'public/cpp/bindings/lib/string_serialization.cc',
         'public/cpp/bindings/lib/sync_dispatcher.cc',
       ],
     },