Add the UtilityProcessMojoClient class and convert SafeJsonParser

content/browser/service_worker/service_worker_version_unittest.cc

Index: content/browser/service_worker/service_worker_version_unittest.cc
diff --git a/content/browser/service_worker/service_worker_version_unittest.cc b/content/browser/service_worker/service_worker_version_unittest.cc
index 2b1987f87af947c1480e674d48b423bdd3449ff1..dbdf4c8057100b5a776b9e622cc65c057e23382b 100644
--- a/content/browser/service_worker/service_worker_version_unittest.cc
+++ b/content/browser/service_worker/service_worker_version_unittest.cc
@@ -164,6 +164,14 @@ class TestMojoServiceImpl : public mojom::TestMojoService {
     callback.Run();
   }
 
+  void DoTerminateProcess(const DoTerminateProcessCallback& callback) override {
+    NOTREACHED();
+  }
+
+  void CreateFolder(const CreateFolderCallback& callback) override {
+    NOTREACHED();
+  }
+
   void GetRequestorName(const GetRequestorNameCallback& callback) override {
     callback.Run(mojo::String(""));
   }