Don't return attributes from from WebViewImpl::setupWebViewAttributes

lib/renderer/web-view/web-view-attributes.js

@@ -297,7 +297,6 @@ class BlinkFeaturesAttribute extends WebViewAttribute {
 
 // Sets up all of the webview attributes.
 WebViewImpl.prototype.setupWebViewAttributes = function() {
-  var attribute, autosizeAttributes, i, len, results;
   this.attributes = {};
   this.attributes[webViewConstants.ATTRIBUTE_ALLOWTRANSPARENCY] = new AllowTransparencyAttribute(this);
   this.attributes[webViewConstants.ATTRIBUTE_AUTOSIZE] = new AutosizeAttribute(this);
@@ -311,11 +310,9 @@ WebViewImpl.prototype.setupWebViewAttributes = function() {
   this.attributes[webViewConstants.ATTRIBUTE_ALLOWPOPUPS] = new BooleanAttribute(webViewConstants.ATTRIBUTE_ALLOWPOPUPS, this);
   this.attributes[webViewConstants.ATTRIBUTE_PRELOAD] = new PreloadAttribute(this);
   this.attributes[webViewConstants.ATTRIBUTE_BLINKFEATURES] = new BlinkFeaturesAttribute(this);
-  autosizeAttributes = [webViewConstants.ATTRIBUTE_MAXHEIGHT, webViewConstants.ATTRIBUTE_MAXWIDTH, webViewConstants.ATTRIBUTE_MINHEIGHT, webViewConstants.ATTRIBUTE_MINWIDTH];
-  results = [];
-  for (i = 0, len = autosizeAttributes.length; i < len; i++) {
-    attribute = autosizeAttributes[i];
-    results.push(this.attributes[attribute] = new AutosizeDimensionAttribute(attribute, this));
-  }
-  return results;
+
+  const autosizeAttributes = [webViewConstants.ATTRIBUTE_MAXHEIGHT, webViewConstants.ATTRIBUTE_MAXWIDTH, webViewConstants.ATTRIBUTE_MINHEIGHT, webViewConstants.ATTRIBUTE_MINWIDTH];
+  autosizeAttributes.forEach((attribute) => {
+    this.attributes[attribute] = new AutosizeDimensionAttribute(attribute, this);
+  });
 };