Migrate RemoteCallMessage to ES6 class (#771)
Migrate RemoteCallMessage to ES6 class (#771)

Migrate the
//common/js/src/requesting/remote-call-message.js
file from legacy Closure Compiler classes to ES6 classes.

This is a pure refactoring change. It's is part of the effort to
modernize the code base, as recent Closure Compiler versions
stopped supporting the legacy class syntax.
GoogleChromeLabs/chromeos_smart_card_connector,googlechromelabs/chromeos_smart_card_connector,googlechromelabs/chromeos_smart_card_connector,GoogleChromeLabs/chromeos_smart_card_connector,GoogleChromeLabs/chromeos_smart_card_connector,googlechromelabs/chromeos_smart_card_connector,googlechromelabs/chromeos_smart_card_connector,GoogleChromeLabs/chromeos_smart_card_connector,googlechromelabs/chromeos_smart_card_connector,GoogleChromeLabs/chromeos_smart_card_connector,GoogleChromeLabs/chromeos_smart_card_connector,googlechromelabs/chromeos_smart_card_connector