A little class for syncing and accessing chrome.sync() data functionally.

Chrome.storage.js

// Class for simultaneously pushing/retrieving from foreign chrome.sync and local object.
var Storage = function() {
    this.set = function(property,value,cb) {
        this[property] = value
        chrome.storage.sync.set(
            {property: value},
            function sentToStorage(storage) {
                console.log("Set new "+property+" = "+value)
                if(typeof cb === 'function') cb()
            }
        )
        return this[property]
    }
    this.update = function(property,cb) {
        var that = this
        chrome.storage.sync.get(property, function receivedPropertyFromStorage(storage) {
            console.log("New "+property+" = "+storage[property])
            that[property] = storage[property]
            if(typeof cb === 'function') cb(that[property])
        })
    }
}