Small cleanups in automation_node.js.

chrome/renderer/resources/extensions/automation/automation_node.js

Index: chrome/renderer/resources/extensions/automation/automation_node.js
diff --git a/chrome/renderer/resources/extensions/automation/automation_node.js b/chrome/renderer/resources/extensions/automation/automation_node.js
index 8983e1bef4a51b80a1877bd840b2566ce4d2ba98..4a89e8edc0d7fe64ade8806a7ae6d460c5651e41 100644
--- a/chrome/renderer/resources/extensions/automation/automation_node.js
+++ b/chrome/renderer/resources/extensions/automation/automation_node.js
@@ -78,15 +78,15 @@ AutomationNodeImpl.prototype = {
     this.performAction_('doDefault');
   },
 
-  focus: function(opt_callback) {
+  focus: function() {
     this.performAction_('focus');
   },
 
-  makeVisible: function(opt_callback) {
+  makeVisible: function() {
     this.performAction_('makeVisible');
   },
 
-  setSelection: function(startIndex, endIndex, opt_callback) {
+  setSelection: function(startIndex, endIndex) {
     this.performAction_('setSelection',
                         { startIndex: startIndex,
                           endIndex: endIndex });
@@ -378,6 +378,14 @@ AutomationRootNodeImpl.prototype = {
     delete this.axNodeDataCache_[id];
   },
 
+  load: function(callback) {
+    // TODO(dtseng/aboxhall): Implement.
+    if (!this.loaded)
+      throw 'Unsupported state: root node is not loaded.';
+
+    setTimeout(callback, 0);
+  },
+
   deleteOldChildren_: function(node, newChildIds) {
     // Create a set of child ids in |src| for fast lookup, and return false
     // if a duplicate is found;