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

components/safe_json/public/interfaces/safe_json.mojom

Index: components/safe_json/public/interfaces/safe_json.mojom
diff --git a/gpu/ipc/common/command_buffer.mojom b/components/safe_json/public/interfaces/safe_json.mojom
similarity index 57%
copy from gpu/ipc/common/command_buffer.mojom
copy to components/safe_json/public/interfaces/safe_json.mojom
index e3677b7df6a81e46041341bc4aef1306b52eedd4..599e6c45f29dd36a131c08c1be217f38f9d87d90 100644
--- a/gpu/ipc/common/command_buffer.mojom
+++ b/components/safe_json/public/interfaces/safe_json.mojom
@@ -2,8 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-module gpu.mojom;
+module safe_json.mojom;
 
-// Native struct CommandBuffer::State;
 [Native]
-struct CommandBufferState;
+struct ListValue;
+
+interface SafeJsonParser {
+  Parse(string json) => (ListValue result, string? error);
+};