Add the UtilityProcessMojoClient class and convert SafeJsonParser

content/shell/utility/shell_content_utility_client.cc

Index: content/shell/utility/shell_content_utility_client.cc
diff --git a/content/shell/utility/shell_content_utility_client.cc b/content/shell/utility/shell_content_utility_client.cc
index 0ed0358579857e00e2cdda857aea3819105e7ac5..4200576503f5781ad290b77457a1dd56a072ed1f 100644
--- a/content/shell/utility/shell_content_utility_client.cc
+++ b/content/shell/utility/shell_content_utility_client.cc
@@ -8,8 +8,11 @@
 #include <utility>
 
 #include "base/bind.h"
+#include "base/files/scoped_temp_dir.h"
+#include "base/process/process.h"
 #include "content/public/common/service_registry.h"
 #include "content/public/test/test_mojo_app.h"
+#include "content/public/test/test_mojo_service.mojom.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace content {
@@ -27,6 +30,16 @@ class TestMojoServiceImpl : public mojom::TestMojoService {
     callback.Run();
   }
 
+  void DoTerminateProcess(const DoTerminateProcessCallback& callback) override {
+    base::Process::Current().Terminate(0, false);
+  }
+
+  void CreateFolder(const CreateFolderCallback& callback) override {
+    // Note: This is used to check if the sandbox is disabled or not since
+    //       creating a folder is forbidden when it is enabled.
+    callback.Run(base::ScopedTempDir().CreateUniqueTempDir());
+  }
+
   void GetRequestorName(const GetRequestorNameCallback& callback) override {
     NOTREACHED();
   }