MD Settings: Use scrollable behavior for all iron-list containers

chrome/browser/resources/settings/search_engines_page/search_engines_list.js

Index: chrome/browser/resources/settings/search_engines_page/search_engines_list.js
diff --git a/chrome/browser/resources/settings/search_engines_page/search_engines_list.js b/chrome/browser/resources/settings/search_engines_page/search_engines_list.js
index 391444486e1141af676e25bc86117cd0f7872237..2bb7f3bd50c85500d90dea7d8e8ec875c07ebf20 100644
--- a/chrome/browser/resources/settings/search_engines_page/search_engines_list.js
+++ b/chrome/browser/resources/settings/search_engines_page/search_engines_list.js
@@ -9,19 +9,21 @@
 Polymer({
   is: 'settings-search-engines-list',
 
+  behaviors: [CrScrollableBehavior],
+
   properties: {
     /** @type {!Array<!SearchEngine>} */
     engines: {
       type: Array,
-      value: function() { return []; },
+      value: function() {
+        return [];
+      },
       observer: 'enginesChanged_',
     }
   },
 
   /** @private */
   enginesChanged_: function() {
-    // Rather than adding an event to notify this element when it is shown,
-    // observe changes to |engines| and notify the iron-list.
-    this.$$('iron-list').fire('iron-resize');
+    this.updateScrollableContents();
   },
 });