[WIP] Mojo native bindings interface.

mojo/public/js/interface_types.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 define("mojo/public/js/interface_types", [
-  "mojo/public/js/core",
-], function(core) {
+], function() {
 
   // ---------------------------------------------------------------------------
 
   function InterfacePtrInfo(handle, version) {
     this.handle = handle;
     this.version = version;
   }
 
   InterfacePtrInfo.prototype.isValid = function() {
-    return core.isHandle(this.handle);
+    return this.handle instanceof MojoHandle;
   };
 
   InterfacePtrInfo.prototype.close = function() {
     if (!this.isValid())
       return;
 
-    core.close(this.handle);
+    this.handle.close();
     this.handle = null;
     this.version = 0;
   };
 
   // ---------------------------------------------------------------------------
 
   function InterfaceRequest(handle) {
     this.handle = handle;
   }
 
   InterfaceRequest.prototype.isValid = function() {
-    return core.isHandle(this.handle);
+    return this.handle instanceof MojoHandle;
   };
 
   InterfaceRequest.prototype.close = function() {
     if (!this.isValid())
       return;
 
-    core.close(this.handle);
+    this.handle.close();
     this.handle = null;
   };
 
   var exports = {};
   exports.InterfacePtrInfo = InterfacePtrInfo;
   exports.InterfaceRequest = InterfaceRequest;
 
   return exports;
 });