diff --git a/devtools/server/actors/styleeditor.js b/devtools/server/actors/styleeditor.js
index c1367fdc1f32..e78b9f1e71f7 100644
--- a/devtools/server/actors/styleeditor.js
+++ b/devtools/server/actors/styleeditor.js
@@ -315,239 +315,6 @@ var OldStyleSheetActor = protocol.ActorClassWithSpec(oldStyleSheetSpec, {
   }
 });
 
-/**
- * Creates a StyleEditorActor. StyleEditorActor provides remote access to the
- * stylesheets of a document.
- */
-var StyleEditorActor = exports.StyleEditorActor = protocol.ActorClass({
-  typeName: "styleeditor",
-
-  /**
-   * The window we work with, taken from the parent actor.
-   */
-  get window() {
-    return this.parentActor.window;
-  },
-
-  /**
-   * The current content document of the window we work with.
-   */
-  get document() {
-    return this.window.document;
-  },
-
-  events: {
-    "document-load" : {
-      type: "documentLoad",
-      styleSheets: Arg(0, "array:old-stylesheet")
-    }
-  },
-
-  form: function ()
-  {
-    return { actor: this.actorID };
-  },
-
-  initialize: function (conn, tabActor) {
-    protocol.Actor.prototype.initialize.call(this, null);
-
-    this.parentActor = tabActor;
-
-    // keep a map of sheets-to-actors so we don't create two actors for one sheet
-    this._sheets = new Map();
-  },
-
-  /**
-   * Destroy the current StyleEditorActor instance.
-   */
-  destroy: function ()
-  {
-    this._sheets.clear();
-  },
-
-  /**
-   * Called by client when target navigates to a new document.
-   * Adds load listeners to document.
-   */
-  newDocument: method(function () {
-    // delete previous document's actors
-    this._clearStyleSheetActors();
-
-    // Note: listening for load won't be necessary once
-    // https://bugzilla.mozilla.org/show_bug.cgi?id=839103 is fixed
-    if (this.document.readyState == "complete") {
-      this._onDocumentLoaded();
-    }
-    else {
-      this.window.addEventListener("load", this._onDocumentLoaded, false);
-    }
-    return {};
-  }),
-
-  /**
-   * Event handler for document loaded event. Add actor for each stylesheet
-   * and send an event notifying of the load
-   */
-  _onDocumentLoaded: function (event) {
-    if (event) {
-      this.window.removeEventListener("load", this._onDocumentLoaded, false);
-    }
-
-    let documents = [this.document];
-    var forms = [];
-    for (let doc of documents) {
-      let sheetForms = this._addStyleSheets(doc.styleSheets);
-      forms = forms.concat(sheetForms);
-      // Recursively handle style sheets of the documents in iframes.
-      for (let iframe of doc.getElementsByTagName("iframe")) {
-        documents.push(iframe.contentDocument);
-      }
-    }
-
-    events.emit(this, "document-load", forms);
-  },
-
-  /**
-   * Add all the stylesheets to the map and create an actor for each one
-   * if not already created. Send event that there are new stylesheets.
-   *
-   * @param {[DOMStyleSheet]} styleSheets
-   *        Stylesheets to add
-   * @return {[object]}
-   *         Array of actors for each StyleSheetActor created
-   */
-  _addStyleSheets: function (styleSheets)
-  {
-    let sheets = [];
-    for (let i = 0; i < styleSheets.length; i++) {
-      let styleSheet = styleSheets[i];
-      sheets.push(styleSheet);
-
-      // Get all sheets, including imported ones
-      let imports = this._getImported(styleSheet);
-      sheets = sheets.concat(imports);
-    }
-    let actors = sheets.map(this._createStyleSheetActor.bind(this));
-
-    return actors;
-  },
-
-  /**
-   * Create a new actor for a style sheet, if it hasn't already been created.
-   *
-   * @param  {DOMStyleSheet} styleSheet
-   *         The style sheet to create an actor for.
-   * @return {StyleSheetActor}
-   *         The actor for this style sheet
-   */
-  _createStyleSheetActor: function (styleSheet)
-  {
-    if (this._sheets.has(styleSheet)) {
-      return this._sheets.get(styleSheet);
-    }
-    let actor = new OldStyleSheetActor(styleSheet, this);
-
-    this.manage(actor);
-    this._sheets.set(styleSheet, actor);
-
-    return actor;
-  },
-
-  /**
-   * Get all the stylesheets @imported from a stylesheet.
-   *
-   * @param  {DOMStyleSheet} styleSheet
-   *         Style sheet to search
-   * @return {array}
-   *         All the imported stylesheets
-   */
-  _getImported: function (styleSheet) {
-    let imported = [];
-
-    for (let i = 0; i < styleSheet.cssRules.length; i++) {
-      let rule = styleSheet.cssRules[i];
-      if (rule.type == Ci.nsIDOMCSSRule.IMPORT_RULE) {
-        // Associated styleSheet may be null if it has already been seen due to
-        // duplicate @imports for the same URL.
-        if (!rule.styleSheet) {
-          continue;
-        }
-        imported.push(rule.styleSheet);
-
-        // recurse imports in this stylesheet as well
-        imported = imported.concat(this._getImported(rule.styleSheet));
-      }
-      else if (rule.type != Ci.nsIDOMCSSRule.CHARSET_RULE) {
-        // @import rules must precede all others except @charset
-        break;
-      }
-    }
-    return imported;
-  },
-
-  /**
-   * Clear all the current stylesheet actors in map.
-   */
-  _clearStyleSheetActors: function () {
-    for (let actor in this._sheets) {
-      this.unmanage(this._sheets[actor]);
-    }
-    this._sheets.clear();
-  },
-
-  /**
-   * Create a new style sheet in the document with the given text.
-   * Return an actor for it.
-   *
-   * @param  {object} request
-   *         Debugging protocol request object, with 'text property'
-   * @return {object}
-   *         Object with 'styelSheet' property for form on new actor.
-   */
-  newStyleSheet: method(function (text) {
-    let parent = this.document.documentElement;
-    let style = this.document.createElementNS("http://www.w3.org/1999/xhtml", "style");
-    style.setAttribute("type", "text/css");
-
-    if (text) {
-      style.appendChild(this.document.createTextNode(text));
-    }
-    parent.appendChild(style);
-
-    let actor = this._createStyleSheetActor(style.sheet);
-    return actor;
-  }, {
-    request: { text: Arg(0, "string") },
-    response: { styleSheet: RetVal("old-stylesheet") }
-  })
-});
-
-/**
- * The corresponding Front object for the StyleEditorActor.
- */
-var StyleEditorFront = protocol.FrontClass(StyleEditorActor, {
-  initialize: function (client, tabForm) {
-    protocol.Front.prototype.initialize.call(this, client);
-    this.actorID = tabForm.styleEditorActor;
-    this.manage(this);
-  },
-
-  getStyleSheets: function () {
-    let deferred = promise.defer();
-
-    events.once(this, "document-load", (styleSheets) => {
-      deferred.resolve(styleSheets);
-    });
-    this.newDocument();
-
-    return deferred.promise;
-  },
-
-  addStyleSheet: function (text) {
-    return this.newStyleSheet(text);
-  }
-});
-
 exports.OldStyleSheetActor = OldStyleSheetActor;
 
 /**