Cleanup: Remove more unneeded browser_thread.h includes.

chrome/browser/download/save_package_file_picker_chromeos.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/download/save_package_file_picker_chromeos.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/i18n/file_util_icu.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/chromeos/drive/drive_download_observer.h"
 #include "chrome/browser/chromeos/drive/drive_file_system_util.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/chrome_select_file_policy.h"
-#include "content/public/browser/browser_thread.h"
 #include "content/public/browser/download_item.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/base/dialogs/selected_file_info.h"
 
 namespace {
 
 // If false, we don't prompt the user as to where to save the file.  This
 // exists only for testing.
 bool g_should_prompt_for_filename = true;
 
@@ skipping 77 matching lines @@
   } else {
     callback_.Run(selected_path, content::SAVE_PAGE_TYPE_AS_MHTML,
                   content::SavePackageDownloadCreatedCallback());
   }
   delete this;
 }
 
 void SavePackageFilePickerChromeOS::FileSelectionCanceled(void* params) {
   delete this;
 }