Implement AutomationNode.querySelector().

chrome/common/extensions/api/automation_internal.idl

Index: chrome/common/extensions/api/automation_internal.idl
diff --git a/chrome/common/extensions/api/automation_internal.idl b/chrome/common/extensions/api/automation_internal.idl
index e95701decfb01da1e090c82ec5a5ece54484769d..772efcf7742af05bcebb0a61171df8022b67add1 100644
--- a/chrome/common/extensions/api/automation_internal.idl
+++ b/chrome/common/extensions/api/automation_internal.idl
@@ -85,6 +85,14 @@ namespace automationInternal {
     long endIndex;
   };
 
+  // Arguments for the querySelector function.
+  dictionary QuerySelectorRequiredParams {
+    long processID;
+    long routingID;
+    long automationNodeID;
+    DOMString selector;
+  };
+
   // Returns the process id and routing id of the tab whose accessibility was
   // enabled using enable().
   callback EnableTabCallback = void(long processID, long routingID);
@@ -92,6 +100,9 @@ namespace automationInternal {
   // Callback called when enableDesktop() returns.
   callback EnableDesktopCallback = void();
 
+  // Callback called when querySelector() returns.
+  callback QuerySelectorCallback = void(long resultAutomationNodeID);
+
   interface Functions {
     // Enable automation of the tab with the given id, or the active tab if no
     // tab id is given, and retrieves its process and routing ids for use in
@@ -104,6 +115,10 @@ namespace automationInternal {
     // Performs an action on an automation node.
     static void performAction(PerformActionRequiredParams args,
                               object opt_args);
+
+    // Performs a query selector query.
+    static void querySelector(QuerySelectorRequiredParams args,
+                              QuerySelectorCallback callback);
   };
 
   interface Events {