[Webapp Refactor] Move key injection logic into the plugin layer.

remoting/webapp/app_remoting/js/app_remoting.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.
 
 /**
  * @fileoverview
  * This class implements the functionality that is specific to application
  * remoting ("AppRemoting" or AR).
  */
 
@@ skipping 193 matching lines @@
   return manifest.name;
 };
 
 /** @return {string} */
 remoting.AppRemoting.prototype.runApplicationUrl = function() {
   return remoting.settings.APP_REMOTING_API_BASE_URL + '/applications/' +
       remoting.settings.getAppRemotingApplicationId() + '/run';
 };
 
 /**
- * @return {string} The default remap keys for the current platform.
- */
-remoting.AppRemoting.prototype.getDefaultRemapKeys = function() {
-  // Map Cmd to Ctrl on Mac since hosts typically use Ctrl for keyboard
-  // shortcuts, but we want them to act as natively as possible.
-  if (remoting.platformIsMac()) {
-    return '0x0700e3>0x0700e0,0x0700e7>0x0700e4';
-  }
-  return '';
-};
-
-/**
  * Called when a new session has been connected.
  *
  * @param {remoting.ConnectionInfo} connectionInfo
  * @return {void} Nothing.
  */
 remoting.AppRemoting.prototype.handleConnected = function(connectionInfo) {
   remoting.identity.getUserInfo().then(
       function(userInfo) {
         remoting.clientSession.sendClientMessage(
             'setUserDisplayInfo',
             JSON.stringify({fullName: userInfo.name}));
       });
 
   remoting.app.getSessionConnector().registerProtocolExtension(this);
 
   var clientSession = connectionInfo.session();
   // Set up a ping at 10-second intervals to test the connection speed.
   var CONNECTION_SPEED_PING_INTERVAL = 10 * 1000;
   this.pingTimer_ = new base.RepeatingTimer(function () {
     var message = { timestamp: new Date().getTime() };
     clientSession.sendClientMessage('pingRequest', JSON.stringify(message));
   }, CONNECTION_SPEED_PING_INTERVAL);
 
   // TODO(kelvinp): Move all app remoting specific logic into
   // remoting.AppRemotingView.
   this.connectedView_ = new remoting.DesktopConnectedView(
-      document.getElementById('client-container'), connectionInfo,
-      this.getDefaultRemapKeys());
+      document.getElementById('client-container'), connectionInfo);
+
+  // Map Cmd to Ctrl on Mac since hosts typically use Ctrl for keyboard
+  // shortcuts, but we want them to act as natively as possible.
+  if (remoting.platformIsMac()) {
+    connectionInfo.plugin().setRemapKeys('0x0700e3>0x0700e0,0x0700e7>0x0700e4');
+  }
 };
 
 /**
  * Called when the current session has been disconnected.
  *
  * @return {void} Nothing.
  */
 remoting.AppRemoting.prototype.handleDisconnected = function() {
   // Cancel the ping when the connection closes.
   base.dispose(this.pingTimer_);
@@ skipping 105 matching lines @@
       chrome.i18n.getMessage(/*i18n-content*/'CONNECTION_FAILED'),
       chrome.i18n.getMessage(error.getTag()));
 };
 
 /**
  * Close the loading window before exiting.
  */
 remoting.AppRemoting.prototype.handleExit = function() {
   remoting.LoadingWindow.close();
 };