Make search engine iron-list aware of the global scrollTarget.

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 2bb7f3bd50c85500d90dea7d8e8ec875c07ebf20..741164fd33cdae172416fb18ec82882588212996 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
@@ -9,21 +9,10 @@
 Polymer({
   is: 'settings-search-engines-list',
 
-  behaviors: [CrScrollableBehavior],
+  behaviors: [settings.GlobalScrollTargetBehavior],
 
   properties: {
     /** @type {!Array<!SearchEngine>} */
-    engines: {
-      type: Array,
-      value: function() {
-        return [];
-      },
-      observer: 'enginesChanged_',
-    }
-  },
-
-  /** @private */
-  enginesChanged_: function() {
-    this.updateScrollableContents();
+    engines: Array,
   },
 });