Reland: Mojo: add javascript bindings for request/response

mojo/public/bindings/js/connection.js

 // Copyright 2014 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.
 
-timers = new (function() {
+define("mojo/public/bindings/js/connection", [
+  "mojo/public/bindings/js/router",
+], function(router) {
 
-this.timers_ = {};
+  function Connection(handle, localFactory, remoteFactory) {
+    this.router_ = new router.Router(handle);
+    this.remote = new remoteFactory(this.router_);
+    this.local = new localFactory(this.remote);
+    this.router_.setIncomingReceiver(this.local);
+  }
 
-this.start = function(name, callback, intervalSeconds) {
-  this.stop(name);
-
-  var timerId = setInterval(callback, intervalSeconds * 1000);
-
-  this.timers_[name] = {
-    name: name,
-    callback: callback,
-    timerId: timerId,
-    intervalSeconds: intervalSeconds
+  Connection.prototype.close = function() {
+    this.router_.close();
+    this.router_ = null;
+    this.local = null;
+    this.remote = null;
   };
 
-  callback();
-};
+  Connection.prototype.encounteredError = function() {
+    return this.router_.encounteredError();
+  };
 
-this.stop = function(name) {
-  if (name in this.timers_) {
-    clearInterval(this.timers_[name].timerId);
-    delete this.timers_[name];
-  }
-};
-
-this.stopAll = function() {
-  for (var name in this.timers_) {
-    clearInterval(this.timers_[name].timerId);
-  }
-  this.timers_ = {};
-};
-
-})();
+  var exports = {};
+  exports.Connection = Connection;
+  return exports;
+});