[inspector_protocol] Allow custom json parser.

templates/TypeBuilder_cpp.template

Index: templates/TypeBuilder_cpp.template
diff --git a/templates/TypeBuilder_cpp.template b/templates/TypeBuilder_cpp.template
index 1103f202b49cf821bb21f65d9979f3cda76d8624..11fd5995e027d78cd17ed2441dbd139461d573f1 100644
--- a/templates/TypeBuilder_cpp.template
+++ b/templates/TypeBuilder_cpp.template
@@ -106,7 +106,7 @@ std::unique_ptr<{{type.id}}> {{type.id}}::clone() const
 std::unique_ptr<API::{{type.id}}> API::{{type.id}}::fromJSONString(const {{config.exported.string_in}}& json)
 {
     ErrorSupport errors;
-    std::unique_ptr<Value> value = parseJSON(json);
+    std::unique_ptr<Value> value = StringUtil::parseJSON(json);
     if (!value)
         return nullptr;
     return protocol::{{domain.domain}}::{{type.id}}::parse(value.get(), &errors);
@@ -355,7 +355,7 @@ DispatchResponse::Status DispatcherImpl::{{command.name}}(int callId, std::uniqu
 // static
 void Dispatcher::wire(UberDispatcher* dispatcher, Backend* backend)
 {
-    dispatcher->registerBackend("{{domain.domain}}", wrapUnique(new DispatcherImpl(dispatcher->channel(), backend)));
+    dispatcher->registerBackend("{{domain.domain}}", std::unique_ptr<protocol::DispatcherBase>(new DispatcherImpl(dispatcher->channel(), backend)));
 }
 
 } // {{domain.domain}}