Bring up the Fast User Switcher on Shift+Click on the new Avatar Button

chrome/browser/ui/profile_chooser_constants.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_PROFILE_CHOOSER_CONSTANTS_H_
 #define CHROME_BROWSER_UI_PROFILE_CHOOSER_CONSTANTS_H_
 
 namespace profiles {
 
 // Different views that can be displayed in the profile chooser bubble.
 enum BubbleViewMode {
-  // Shows a "fast profile switcher" view.
+  // Shows the default avatar bubble.
   BUBBLE_VIEW_MODE_PROFILE_CHOOSER,
   // Shows a list of accounts for the active user.
   BUBBLE_VIEW_MODE_ACCOUNT_MANAGEMENT,
   // Shows a web view for primary sign in.
   BUBBLE_VIEW_MODE_GAIA_SIGNIN,
   // Shows a web view for adding secondary accounts.
   BUBBLE_VIEW_MODE_GAIA_ADD_ACCOUNT,
   // Shows a web view for reauthenticating an account.
   BUBBLE_VIEW_MODE_GAIA_REAUTH,
   // Shows a view for confirming account removal.
   BUBBLE_VIEW_MODE_ACCOUNT_REMOVAL,
   // Shows a view for switching user.
   BUBBLE_VIEW_MODE_SWITCH_USER,
+  // Shows a "fast profile switcher" view.
+  BUBBLE_VIEW_MODE_FAST_PROFILE_CHOOSER,
 };
 
 // Tutorial modes that can be displayed in the profile chooser bubble.
 enum TutorialMode {
   // No tutorial card shown.
   TUTORIAL_MODE_NONE,
   // A tutorial card shown to confirm Chrome signin.
   TUTORIAL_MODE_CONFIRM_SIGNIN,
   // A tutorial card shown to introduce an upgrade user to the new avatar menu.
   TUTORIAL_MODE_WELCOME_UPGRADE,
   // A tutorial card shown to display the signin errors.
   TUTORIAL_MODE_SHOW_ERROR,
 };
 
 };  // namespace profiles
 
 #endif  // CHROME_BROWSER_UI_PROFILE_CHOOSER_CONSTANTS_H_