events: keycodes: Remove the stateless singleton instance of KeycodeConverter

remoting/client/plugin/pepper_input_handler.cc

Index: remoting/client/plugin/pepper_input_handler.cc
diff --git a/remoting/client/plugin/pepper_input_handler.cc b/remoting/client/plugin/pepper_input_handler.cc
index 5bdebf39a49570db92f394dc84ee32837f6d07c1..f12b1fd1dfb0eb93b7c1247b22e6daa3ca473926 100644
--- a/remoting/client/plugin/pepper_input_handler.cc
+++ b/remoting/client/plugin/pepper_input_handler.cc
@@ -39,8 +39,7 @@ uint32_t GetUsbKeyCode(pp::KeyboardInputEvent pp_key_event) {
   std::string codestr = pp_key_event.GetCode().AsString();
 
   // Convert the |code| string into a USB keycode.
-  ui::KeycodeConverter* key_converter = ui::KeycodeConverter::GetInstance();
-  return key_converter->CodeToUsbKeycode(codestr.c_str());
+  return ui::KeycodeConverter::CodeToUsbKeycode(codestr.c_str());
 }
 
 bool PepperInputHandler::HandleInputEvent(const pp::InputEvent& event) {