Determine whether user is ephemeral when coming back from a crash

chrome/browser/chromeos/login/user_manager_impl.cc

 // Copyright (c) 2012 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 "chrome/browser/chromeos/login/user_manager_impl.h"
 
 #include <vector>
 
 #include "ash/shell.h"
 #include "ash/desktop_background/desktop_background_controller.h"
@@ skipping 882 matching lines @@
 
 bool UserManagerImpl::IsEphemeralUser(const std::string& email) const {
   // The guest user always is ephemeral.
   if (email == kGuestUser)
     return true;
 
   // The currently logged-in user is ephemeral iff logged in as ephemeral.
   if (logged_in_user_ && (email == logged_in_user_->email()))
     return is_current_user_ephemeral_;
 
-  // Any other user is ephemeral iff ephemeral users are enabled, the user is
-  // not the owner and is not in the persistent list.
-  return AreEphemeralUsersEnabled() &&
-      (email != owner_email_) &&
-      !FindUserInList(email);
+  // The owner and any users found in the persistent list are never ephemeral.
+  if (email == owner_email_  || FindUserInList(email))
+    return false;
+
+  // Any other user is ephemeral when:
+  // a) Going through the regular login flow and ephemeral users are enabled.
+  //    - or -
+  // b) The browser is restarting after a crash.
+  return AreEphemeralUsersEnabled() ||
+         !CommandLine::ForCurrentProcess()->HasSwitch(switches::kLoginManager);
 }
 
 const User* UserManagerImpl::FindUserInList(const std::string& email) const {
   const UserList& users = GetUsers();
   for (UserList::const_iterator it = users.begin(); it != users.end(); ++it) {
     if ((*it)->email() == email)
       return *it;
   }
   return NULL;
 }
@@ skipping 458 matching lines @@
     BrowserThread::PostTask(
         BrowserThread::FILE,
         FROM_HERE,
         base::Bind(&UserManagerImpl::DeleteUserImage,
                    base::Unretained(this),
                    image_path));
   }
 }
 
 }  // namespace chromeos