Since I5ba3a0e5 camel case naming convention is consistently used on
both client and server sides. The translation is done implicitly in
GsonBuilder factory by setting the field naming policy to:
FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES
in RestApiServlet#newGsonBuilder() method that is used to render the
response object.
Change-Id: I3d9d157c64f9f76e4f60d78fffcd615089e8016c
01f8e903a5