[Chromoting] Move app-specific code out of remoting.js

remoting/webapp/base/js/application.js

Index: remoting/webapp/base/js/application.js
diff --git a/remoting/webapp/base/js/application.js b/remoting/webapp/base/js/application.js
index 82b64534c4a50a56a79271531acecc8fbb2c3b4e..06658c65affb0b580bb24b26cae0dd2ba8ec88e1 100644
--- a/remoting/webapp/base/js/application.js
+++ b/remoting/webapp/base/js/application.js
@@ -89,7 +89,7 @@ remoting.Application.prototype.start = function() {
         if (error.hasTag(remoting.Error.Tag.CANCELLED)) {
           that.exit();
         } else {
-          that.delegate_.signInFailed(error);
+          that.delegate_.handleAuthError(error);
         }
       }
     )
@@ -169,6 +169,16 @@ remoting.Application.prototype.onError = function(errorTag) {
 };
 
 /**
+ * Called when an auth error needs to be displayed to the user.
+ *
+ * @param {!remoting.Error} errorTag The error to be localized and displayed.
+ * @return {void} Nothing.
+ */
+remoting.Application.prototype.onAuthError = function(errorTag) {
+  this.delegate_.handleAuthError(errorTag);
+};
+
+/**
  * @return {remoting.SessionConnector} A session connector, creating a new one
  *     if necessary.
  */
@@ -255,14 +265,6 @@ remoting.Application.Delegate.prototype.init = function() {};
 remoting.Application.Delegate.prototype.start = function(connector, token) {};
 
 /**
- * Report an authentication error to the user. This is called in lieu of start()
- * if the user cannot be authenticated.
- *
- * @param {!remoting.Error} error The failure reason.
- */
-remoting.Application.Delegate.prototype.signInFailed = function(error) {};
-
-/**
  * @return {string} Application product name to be used in UI.
  */
 remoting.Application.Delegate.prototype.getApplicationName = function() {};
@@ -316,6 +318,14 @@ remoting.Application.Delegate.prototype.handleVideoStreamingStarted =
 remoting.Application.Delegate.prototype.handleError = function(errorTag) {};
 
 /**
+ * Report an authentication error to the user. This is called in lieu of start()
+ * if the user cannot be authenticated.
+ *
+ * @param {!remoting.Error} error The failure reason.
+ */
+remoting.Application.Delegate.prototype.handleAuthError = function(error) {};
+
+/**
  * Perform any application-specific cleanup before exiting. This is called in
  * lieu of start() if the user declines the app permissions, and will usually
  * be called immediately prior to exiting, although delegates should not rely