cr/ui/list.js: Support rows with variable heights.

chrome/browser/resources/options/intents_list.js

Index: chrome/browser/resources/options/intents_list.js
diff --git a/chrome/browser/resources/options/intents_list.js b/chrome/browser/resources/options/intents_list.js
index 28e722d1646eca2c423c2536984771f15c1293c9..e2dc21e65414bb42d96bb5d413aed8935e3f8777 100644
--- a/chrome/browser/resources/options/intents_list.js
+++ b/chrome/browser/resources/options/intents_list.js
@@ -115,7 +115,6 @@ cr.define('options', function() {
         this.dataChild.hidden = true;
       } else {
         if (this.list.expandedItem == this) {
-          this.list.leadItemHeight = 0;
           this.list.expandedItem = null;
         }
         this.style.height = '';
@@ -169,8 +168,6 @@ cr.define('options', function() {
       this.classList.remove('measure-items');
       this.itemsChild.style.height = itemsHeight + 'px';
       this.style.height = fixedHeight + 'px';
-      if (this.expanded)
-        this.list.leadItemHeight = fixedHeight;
     },
 
     /**
@@ -497,6 +494,7 @@ cr.define('options', function() {
       sm.addEventListener('change', this.cookieSelectionChange_.bind(this));
       sm.addEventListener('leadIndexChange', this.cookieLeadChange_.bind(this));
       this.selectionModel = sm;
+      this.fixedHeight = false;
     },
 
     /**