Add the UtilityProcessMojoClient class and convert SafeJsonParser

content/shell/renderer/shell_content_renderer_client.cc

Index: content/shell/renderer/shell_content_renderer_client.cc
diff --git a/content/shell/renderer/shell_content_renderer_client.cc b/content/shell/renderer/shell_content_renderer_client.cc
index 98195872bec61e48068a23aabfcaf8b5dd5e0c01..901ad09b9dc4dc335042b72d847dab52cc826a7f 100644
--- a/content/shell/renderer/shell_content_renderer_client.cc
+++ b/content/shell/renderer/shell_content_renderer_client.cc
@@ -4,8 +4,11 @@
 
 #include "content/shell/renderer/shell_content_renderer_client.h"
 
+#include <string>
+
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/logging.h"
 #include "base/macros.h"
 #include "components/web_cache/renderer/web_cache_impl.h"
 #include "content/public/common/service_registry.h"
@@ -29,7 +32,7 @@ namespace {
 // A test Mojo service which can be driven by browser tests for various reasons.
 class TestMojoServiceImpl : public mojom::TestMojoService {
  public:
-  TestMojoServiceImpl(mojom::TestMojoServiceRequest request)
+  explicit TestMojoServiceImpl(mojom::TestMojoServiceRequest request)
       : binding_(this, std::move(request)) {
     binding_.set_connection_error_handler(
         base::Bind(&TestMojoServiceImpl::OnConnectionError,
@@ -56,6 +59,14 @@ class TestMojoServiceImpl : public mojom::TestMojoService {
     OnConnectionError();
   }
 
+  void DoTerminateProcess(const DoTerminateProcessCallback& callback) override {
+    NOTREACHED();
+  }
+
+  void CreateFolder(const CreateFolderCallback& callback) override {
+    NOTREACHED();
+  }
+
   void GetRequestorName(const GetRequestorNameCallback& callback) override {
     callback.Run("Not implemented.");
   }