Lint clean

lib/mixins/dir-mixin.js

@@ -109,6 +109,9 @@ export const DirMixin = dedupingMixin((base) => {
   class Dir extends elementBase {
 
     /**
+     * @param {string} cssText .
+     * @param {string} baseURI .
+     * @return {string} .
      * @suppress {missingProperties} Interfaces in closure do not inherit statics, but classes do
      */
     static _processStyleText(cssText, baseURI) {

lib/mixins/element-mixin.js

@@ -354,6 +354,7 @@ export const ElementMixin = dedupingMixin(base => {
     /**
      * Override of PropertiesChanged createProperties to create accessors
      * and property effects for all of the properties.
+     * @param {!Object} props .
      * @return {void}
      * @protected
      */
@@ -722,6 +723,10 @@ export const ElementMixin = dedupingMixin(base => {
      * code. This map determines which method templates should have accessors
      * created for them.
      *
+     * @param {!HTMLTemplateElement} template Template
+     * @param {!TemplateInfo} templateInfo Template metadata for current template
+     * @param {!NodeInfo} nodeInfo Node metadata for current template.
+     * @return {boolean} .
      * @suppress {missingProperties} Interfaces in closure do not inherit statics, but classes do
      */
     static _parseTemplateContent(template, templateInfo, nodeInfo) {