New Mojom parser: Remove dependency on CGO.

mojom/mojom_parser/BUILD.gn

 # Copyright 2015 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.
 
 import("//mojo/go/rules.gni")
 
 go_binary("mojom_parser") {
   sources = [
     "parser_main.go",
   ]
   inputs = [
     "generated/mojom_files/mojom_files.mojom.go",
     "generated/mojom_types/mojom_types.mojom.go",
     "lexer/lexer.go",
     "lexer/token_stream.go",
     "lexer/tokens.go",
     "mojom/computed_data.go",
     "mojom/mojom_descriptor.go",
     "mojom/scopes.go",
     "mojom/types.go",
     "mojom/user_defined_types.go",
     "mojom/utils.go",
     "parser/parse_driver.go",
     "parser/parser.go",
     "parser/parsing.go",
     "serialization/serialization.go",
   ]
-  deps = [
-    "//mojo/public/platform/native:system",
-  ]
 
   # Ninja gets confused if the output_binary_name is the same
   # as the target name.
   output_binary_name = "moparse"
 }
-
-go_test_binary("serialization_test") {
-  sources = [
-    "serialization/serialization.go",
-    "serialization/serialization_test.go",
-  ]
-  inputs = [
-    "generated/mojom_files/mojom_files.mojom.go",
-    "generated/mojom_types/mojom_types.mojom.go",
-    "lexer/lexer.go",
-    "lexer/token_stream.go",
-    "lexer/tokens.go",
-    "mojom/computed_data.go",
-    "mojom/mojom_descriptor.go",
-    "mojom/scopes.go",
-    "mojom/types.go",
-    "mojom/user_defined_types.go",
-    "mojom/utils.go",
-    "parser/parse_driver.go",
-    "parser/parser.go",
-    "parser/parsing.go",
-    "//third_party/golang/src/fmt/print.go",
-  ]
-  deps = [
-    "//mojo/public/platform/native:system",
-  ]
-}