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

remoting/webapp/crd/js/session_connector.js

Index: remoting/webapp/crd/js/session_connector.js
diff --git a/remoting/webapp/crd/js/session_connector.js b/remoting/webapp/crd/js/session_connector.js
index 2d35a78de168e3a5158ed836778e10751e039b7b..467648e29eadb8632f5893df29b0b888978dd4d5 100644
--- a/remoting/webapp/crd/js/session_connector.js
+++ b/remoting/webapp/crd/js/session_connector.js
@@ -129,13 +129,11 @@ remoting.SessionConnectorFactory = function() {};
  *     the connection fails.
  * @param {Array<string>} requiredCapabilities Connector capabilities
  *     required by this application.
- * @param {string} defaultRemapKeys The default set of key mappings to use
- *     in the client session.
  * @return {remoting.SessionConnector}
  */
 remoting.SessionConnectorFactory.prototype.createConnector =
     function(clientContainer, onConnected, onError,
-             onConnectionFailed, requiredCapabilities, defaultRemapKeys) {};
+             onConnectionFailed, requiredCapabilities) {};
 
 /**
  * @type {remoting.SessionConnectorFactory}