The User Manager needs to use profile paths not display names for profile switching

chrome/browser/resources/user_manager/user_manager.js

 // Copyright 2013 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.
 <include src="../../../../ui/login/screen.js">
 <include src="../../../../ui/login/bubble.js">
 <include src="../../../../ui/login/login_ui_tools.js">
 <include src="../../../../ui/login/display_manager.js">
 <include src="control_bar.js">
 <include src="../../../../ui/login/account_picker/screen_account_picker.js">
 <include src="../../../../ui/login/account_picker/user_pod_row.js">
@@ skipping 40 matching lines @@
     // make sense when displayed as a widget.
     document.addEventListener('contextmenu', function(e) {e.preventDefault();});
 
     var hash = window.location.hash;
     if (hash && hash == '#tutorial')
       UserManagerTutorial.startTutorial();
   };
 
   /**
    * Open a new browser for the given profile.
-   * @param {string} email The user's email, if signed in.
-   * @param {string} displayName The user's display name.
+   * @param {string} profilePath The profile's path.
    */
-  Oobe.launchUser = function(email, displayName) {
-    chrome.send('launchUser', [email, displayName]);
+  Oobe.launchUser = function(profilePath) {
+    chrome.send('launchUser', [profilePath]);
   };
 
   /**
    * Disables signin UI.
    */
   Oobe.disableSigninUI = function() {
     DisplayManager.disableSigninUI();
   };
 
   /**
@@ skipping 79 matching lines @@
 // Allow selection events on components with editable text (password field)
 // bug (http://code.google.com/p/chromium/issues/detail?id=125863)
 disableTextSelectAndDrag(function(e) {
   var src = e.target;
   return src instanceof HTMLTextAreaElement ||
          src instanceof HTMLInputElement &&
          /text|password|search/.test(src.type);
 });
 
 document.addEventListener('DOMContentLoaded', UserManager.initialize);