Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and

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) {
 
+  // Constants ----------------------------------------------------------------
+  var kInterfaceIdNamespaceMask = 0x80000000;
+  var kMasterInterfaceId = 0x00000000;
+  var kInvalidInterfaceId = 0xFFFFFFFF;
+
   // ---------------------------------------------------------------------------
 
   function InterfacePtrInfo(handle, version) {
     this.handle = handle;
     this.version = version;
   }
 
   InterfacePtrInfo.prototype.isValid = function() {
     return core.isHandle(this.handle);
   };
@@ skipping 18 matching lines @@
   };
 
   InterfaceRequest.prototype.close = function() {
     if (!this.isValid())
       return;
 
     core.close(this.handle);
     this.handle = null;
   };
 
+  function isMasterInterfaceId(interfaceId) {
+    return interfaceId === kMasterInterfaceId;
+  }
+
+  function isValidInterfaceId(interfaceId) {
+    return interfaceId !== kInvalidInterfaceId;
+  }
+
   var exports = {};
   exports.InterfacePtrInfo = InterfacePtrInfo;
   exports.InterfaceRequest = InterfaceRequest;
+  exports.isMasterInterfaceId = isMasterInterfaceId;
+  exports.isValidInterfaceId = isValidInterfaceId;
+  exports.kInvalidInterfaceId = kInvalidInterfaceId;
+  exports.kMasterInterfaceId = kMasterInterfaceId;
+  exports.kInterfaceIdNamespaceMask = kInterfaceIdNamespaceMask;
 
   return exports;
 });