Use the Mojo StubBindings interface correctly in WebUSB LayoutTests.

mojo/public/js/bindings.js

Index: mojo/public/js/bindings.js
diff --git a/mojo/public/js/bindings.js b/mojo/public/js/bindings.js
index 44aa9f4e9fed6529dbfa495db9712c939e01d38e..2fdcae39f30d17114602f3602299670eed5c1884 100644
--- a/mojo/public/js/bindings.js
+++ b/mojo/public/js/bindings.js
@@ -31,17 +31,8 @@ define("mojo/public/js/bindings", [
       throw new Error("no stub object");
   }
 
-  function connectionHandle(connection) {
-    return connection &&
-        connection.router &&
-        connection.router.connector_ &&
-        connection.router.connector_.handle_;
-  }
-
   ProxyProperties.prototype.close = function() {
-    var handle = connectionHandle(this.connection);
-    if (handle)
-      core.close(handle);
+    this.connection.close();
   }
 
   // Public stub class properties that are managed at runtime by the JS
@@ -51,9 +42,7 @@ define("mojo/public/js/bindings", [
   }
 
   StubProperties.prototype.close = function() {
-    var handle = connectionHandle(this.connection);
-    if (handle)
-      core.close(handle);
+    this.connection.close();
   }
 
   // The base class for generated proxy classes.
@@ -125,4 +114,4 @@ define("mojo/public/js/bindings", [
   exports.StubBase = StubBase;
   exports.StubBindings = StubBindings;
   return exports;
-});
+});