Revert of Convert the utility process JSON parser into a Mojo service.

components/safe_json/safe_json_parser_impl.h

Index: components/safe_json/safe_json_parser_impl.h
diff --git a/components/safe_json/safe_json_parser_impl.h b/components/safe_json/safe_json_parser_impl.h
index eefa187d35b9d0f16800cfb2d6afe914d4711488..5f29bc03c52cd98a35a38485dcdb121d67f155d4 100644
--- a/components/safe_json/safe_json_parser_impl.h
+++ b/components/safe_json/safe_json_parser_impl.h
@@ -10,9 +10,6 @@
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/thread_checker.h"
-#include "components/safe_json/public/interfaces/safe_json.mojom.h"
 #include "components/safe_json/safe_json_parser.h"
 #include "content/public/browser/utility_process_host_client.h"
 
@@ -20,10 +17,6 @@
 class ListValue;
 class SequencedTaskRunner;
 class Value;
-}
-
-namespace content {
-class UtilityProcessHost;
 }
 
 namespace IPC {
@@ -44,6 +37,9 @@
 
   void StartWorkOnIOThread();
 
+  void OnJSONParseSucceeded(const base::ListValue& wrapper);
+  void OnJSONParseFailed(const std::string& error_message);
+
   void ReportResults();
   void ReportResultsOnOriginThread();
 
@@ -53,9 +49,6 @@
   // SafeJsonParser implementation.
   void Start() override;
 
-  // mojom::SafeJsonParser::Parse callback.
-  void OnParseDone(const base::ListValue& wrapper, mojo::String error);
-
   const std::string unsafe_json_;
   SuccessCallback success_callback_;
   ErrorCallback error_callback_;
@@ -64,14 +57,6 @@
   std::unique_ptr<base::Value> parsed_json_;
   std::string error_;
 
-  base::WeakPtr<content::UtilityProcessHost> utility_process_host_;
-
-  mojom::SafeJsonParserPtr service_;
-
-  // To ensure the UtilityProcessHost and Mojo service are only accessed on the
-  // IO thread.
-  base::ThreadChecker io_thread_checker_;
-
   DISALLOW_COPY_AND_ASSIGN(SafeJsonParserImpl);
 };