Forward accessibility events to the automation extension process.

chrome/renderer/resources/extensions/automation_custom_bindings.js

Index: chrome/renderer/resources/extensions/automation_custom_bindings.js
diff --git a/chrome/renderer/resources/extensions/automation_custom_bindings.js b/chrome/renderer/resources/extensions/automation_custom_bindings.js
index 3d38afc4e0a5c427a40f93c8108a22a99e5aaede..3cb85702018f9eeb52e404cfaffb6bfb42a37986 100644
--- a/chrome/renderer/resources/extensions/automation_custom_bindings.js
+++ b/chrome/renderer/resources/extensions/automation_custom_bindings.js
@@ -14,6 +14,8 @@ var forEach = require('utils').forEach;
 var lastError = require('lastError');
 var logging = requireNative('logging');
 var schema = requireNative('automationInternal').GetSchemaAdditions();
+var GetAutomationInternalRoutingID =
+    requireNative('automationInternal').GetAutomationInternalRoutingID;
 
 /**
  * A namespace to export utility functions to other files in automation.
@@ -54,6 +56,8 @@ automation.registerCustomHook(function(bindingsAPI) {
 
   // TODO(aboxhall, dtseng): Make this return the speced AutomationRootNode obj.
   apiFunctions.setHandleRequest('getTree', function getTree(tabId, callback) {
+    var routingId = GetAutomationInternalRoutingID();
+
     // enableTab() ensures the renderer for the active or specified tab has
     // accessibility enabled, and fetches its ax tree id to use as
     // a key in the idToAutomationRootNode map. The callback to
@@ -61,13 +65,14 @@ automation.registerCustomHook(function(bindingsAPI) {
     // the tree is available (either due to having been cached earlier, or after
     // an accessibility event occurs which causes the tree to be populated), the
     // callback can be called.
-    automationInternal.enableTab(tabId, function onEnable(id) {
-      if (lastError.hasError(chrome)) {
-        callback();
-        return;
-      }
-      automationUtil.storeTreeCallback(id, callback);
-    });
+    automationInternal.enableTab(routingId, tabId,
+        function onEnable(id) {
+          if (lastError.hasError(chrome)) {
+            callback();
+            return;
+          }
+          automationUtil.storeTreeCallback(id, callback);
+        });
   });
 
   var desktopTree = null;
@@ -80,9 +85,11 @@ automation.registerCustomHook(function(bindingsAPI) {
       else
         idToCallback[DESKTOP_TREE_ID] = [callback];
 
+      var routingId = GetAutomationInternalRoutingID();
+
       // TODO(dtseng): Disable desktop tree once desktop object goes out of
       // scope.
-      automationInternal.enableDesktop(function() {
+      automationInternal.enableDesktop(routingId, function() {
         if (lastError.hasError(chrome)) {
           delete idToAutomationRootNode[
               DESKTOP_TREE_ID];