Convert the utility process JSON parser into a Mojo service.

components/safe_json.gypi

Index: components/safe_json.gypi
diff --git a/components/safe_json.gypi b/components/safe_json.gypi
index 11ab7889f88df95719e79d2e7a3f389b5d0c52af..efc170d0d4b3e91f42aba983149bbcbdd23243e6 100644
--- a/components/safe_json.gypi
+++ b/components/safe_json.gypi
@@ -9,7 +9,7 @@
       'target_name': 'safe_json',
       'type': 'static_library',
       'dependencies': [
-        'safe_json_parser_message_filter',
+        'safe_json_mojo_bindings',
         '../base/base.gyp:base',
         '../components/components_strings.gyp:components_strings',
         '../content/content.gyp:content_browser',
@@ -61,9 +61,25 @@
       ],
     },
     {
-      'target_name': 'safe_json_parser_message_filter',
+      # GN version: //components/safe_json:interfaces
+      'target_name': 'safe_json_mojo_bindings',
+      'type': 'static_library',
+      'variables': {
+        'mojom_extra_generator_args': [
+          '--typemap',
+          '<(DEPTH)/components/safe_json/public/interfaces/mojo.typemap',
+        ],
+      },
+      'sources': [
+        'safe_json/public/interfaces/safe_json.mojom',
+      ],
+      'includes': [ '../mojo/mojom_bindings_generator.gypi'],
+    },
+    {
+      'target_name': 'safe_json_parser_mojo',
       'type': 'static_library',
       'dependencies': [
+        'safe_json_mojo_bindings',
         '../base/base.gyp:base',
         '../content/content.gyp:content_common',
         '../content/content.gyp:content_utility',
@@ -73,10 +89,8 @@
         '..',
       ],
       'sources': [
-        'safe_json/safe_json_parser_message_filter.cc',
-        'safe_json/safe_json_parser_message_filter.h',
-        'safe_json/safe_json_parser_messages.cc',
-        'safe_json/safe_json_parser_messages.h',
+        'safe_json/safe_json_parser_mojo_impl.cc',
+        'safe_json/safe_json_parser_mojo_impl.h',
       ],
     },
   ],