Bug 728861 - Don't make the add-on list visible when refreshing it in the background [r=mfinkle]

mobile/android/chrome/content/aboutAddons.xhtml

@@ -146,6 +146,7 @@
 
       AddonManager.addInstallListener(Addons);
       Addons.getAddons();
+      showList();
     }
 
     function uninit() {
@@ -172,14 +173,18 @@
         let detailItem = document.querySelector("#addons-details > .addon-item");
         detailItem.addon = null;
 
-        // Hide the detail page and show the list
-        let details = document.querySelector("#addons-details");
-        details.style.display = "none";
-        let list = document.querySelector("#addons-list");
-        list.style.display = "block";
+        showList();
       }
     }
 
+    function showList() {
+      // Hide the detail page and show the list
+      let details = document.querySelector("#addons-details");
+      details.style.display = "none";
+      let list = document.querySelector("#addons-list");
+      list.style.display = "block";
+    }
+
     var Addons = {
       _createItem: function _createItem(aAddon) {
         let outer = document.createElement("div");
@@ -278,9 +283,6 @@
             list.appendChild(item);
           }
 
-          list.style.display = "block";
-          document.getElementById("addons-header").setAttribute("showlist", "true");
-
           // Load the search engines
           let defaults = Services.search.getDefaultEngines({ }).map(function (e) e.name);
           function isDefault(aEngine)