Re-land: Convert the utility process JSON parser into a Mojo service.

components/safe_json/public/interfaces/safe_json.typemap

Index: components/safe_json/public/interfaces/safe_json.typemap
diff --git a/mojo/common/common_custom_types.typemap b/components/safe_json/public/interfaces/safe_json.typemap
similarity index 52%
copy from mojo/common/common_custom_types.typemap
copy to components/safe_json/public/interfaces/safe_json.typemap
index fc2c767a84f6841e8d1055d7b53e41c317c14dee..adca3e2a9e4b2935d82b78ffb41ed7f187ea6cf1 100644
--- a/mojo/common/common_custom_types.typemap
+++ b/components/safe_json/public/interfaces/safe_json.typemap
@@ -2,11 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-mojom = "//mojo/common/common_custom_types.mojom"
-public_headers = [ "//base/files/file_path.h" ]
+mojom = "//components/safe_json/public/interfaces/safe_json.mojom"
+public_headers = [ "//base/values.h" ]
 traits_headers = [ "//ipc/ipc_message_utils.h" ]
-deps = [
-  "//ipc",
-]
-
-type_mappings = [ "mojo.common.mojom.FilePath=base::FilePath" ]
+deps = [ "//ipc" ]
+type_mappings = [ "safe_json.mojom.ListValue=base::ListValue" ]