         delete window[key]
       else
         window[key] = value
+
+  # Deprecated: Callers should be converted to use atom.deserializers
+  registerRepresentationClass: ->
+    deprecate("Callers should be converted to use atom.deserializers")
+
+  # Deprecated: Callers should be converted to use atom.deserializers
+  registerRepresentationClasses: ->
+    deprecate("Callers should be converted to use atom.deserializers")
+
+  setBodyPlatformClass: ->
+    document.body.classList.add("platform-#{process.platform}")

    dimensions = @getWindowDimensions()
    @state.windowDimensions = dimensions if @isValidDimensions(dimensions)

  # Public: Get the load settings for the current window.
  #
  # Returns an {Object} containing all the load setting key/value pairs.

    Editor = require './editor'

    @windowEventHandler = new WindowEventHandler

  ###
  Section: Managing The Atom Window
