Remove desktop auto-login since we don't plan on shipping it.

chrome/browser/ui/auto_login_infobar_delegate.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_AUTO_LOGIN_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_UI_AUTO_LOGIN_INFOBAR_DELEGATE_H_
 
 #include <string>
 #include "chrome/browser/infobars/confirm_infobar_delegate.h"
 #include "components/auto_login_parser/auto_login_parser.h"
 #include "components/signin/core/browser/signin_manager.h"
 
 class PrefService;
 class Profile;
 
 namespace content {
 class NavigationController;
 class WebContents;
 }
 
-// This is the actual infobar displayed to prompt the user to auto-login.
+// This is the actual infobar displayed to prompt the user to auto-login.  This
+// class is shared by Android and iOS, but it is not used on desktop.

[sky, 2014/04/16 21:35:45]

Is there a particular reason you need to say this? You're duplicating what the
gyp files say, which means it's easy to get out of sync.

 class AutoLoginInfoBarDelegate : public ConfirmInfoBarDelegate,
                                  public SigninManagerBase::Observer {
  public:
   struct Params {
     // Information from a parsed header.
     auto_login_parser::HeaderData header;
 
     // Username to display in the infobar indicating user to be logged in as.
     // This is initially fetched from sign-in on non-Android platforms. Note
     // that on Android this field is not used.
@@ skipping 40 matching lines @@
 
   Profile* profile_;
 
   // Whether any UI controls in the infobar were pressed or not.
   bool button_pressed_;
 
   DISALLOW_COPY_AND_ASSIGN(AutoLoginInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_AUTO_LOGIN_INFOBAR_DELEGATE_H_