Teaching BrowsingDataRemover how to delete application data.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.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/ui/webui/chromeos/login/signin_screen_handler.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/command_line.h"
@@ skipping 1016 matching lines @@
 void SigninScreenHandler::StartClearingCookies() {
   cookies_cleared_ = false;
   if (cookie_remover_)
     cookie_remover_->RemoveObserver(this);
 
   cookie_remover_ = new BrowsingDataRemover(
       Profile::FromWebUI(web_ui()),
       BrowsingDataRemover::EVERYTHING,
       base::Time());
   cookie_remover_->AddObserver(this);
-  cookie_remover_->Remove(BrowsingDataRemover::REMOVE_SITE_DATA);
+  cookie_remover_->Remove(BrowsingDataRemover::REMOVE_SITE_DATA,
+                          BrowsingDataRemover::UNPROTECTED_WEB);
 }
 
 void SigninScreenHandler::MaybePreloadAuthExtension() {
   // Fetching of the extension is not started before account picker page is
   // loaded because it can affect the loading speed. Also if |cookie_remover_|
   // or |dns_clear_task_running_| then auth extension showing has already been
   // initiated and preloading is senseless.
   // Do not load the extension for the screen locker, see crosbug.com/25018.
   if (is_account_picker_showing_first_time_ &&
       !gaia_silent_load_ &&
       !ScreenLocker::default_screen_locker() &&
       !cookie_remover_ &&
       !dns_clear_task_running_ &&
       network_state_informer_->is_online()) {
     gaia_silent_load_ = true;
     gaia_silent_load_network_ =
         network_state_informer_->active_network_service_path();
     LoadAuthExtension(true, true, false);
   }
 }
 
 }  // namespace chromeos