* refactor: use base::WriteJson() in ListValueToNSArray()
refactor: use base::WriteJson() in DictionaryValueToNSDictionary()
* refactor: use base::WriteJson() in Debugger::SendCommand()
* refactor: use base::WriteJson() in ScriptingExecuteScriptFunction::Run()
* refactor: use base::WriteJson() in HandleAccessibilityRequestCallback()