Add a refresh button for providers which do not support watchers.

chrome/browser/chromeos/extensions/file_manager/private_api_strings.cc

 // Copyright 2013 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/extensions/file_manager/private_api_strings.h"
 
 #include "base/strings/stringprintf.h"
 #include "base/sys_info.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/file_manager/open_with_browser.h"
@@ skipping 466 matching lines @@
   SET_STRING("OPEN_IN_OTHER_DESKTOP_MESSAGE",
              IDS_FILE_BROWSER_OPEN_IN_OTHER_DESKTOP_MESSAGE);
   SET_STRING("OPEN_IN_OTHER_DESKTOP_MESSAGE_PLURAL",
              IDS_FILE_BROWSER_OPEN_IN_OTHER_DESKTOP_MESSAGE_PLURAL);
   SET_STRING("OPEN_LABEL", IDS_FILE_BROWSER_OPEN_LABEL);
   SET_STRING("OPEN_WITH_BUTTON_LABEL", IDS_FILE_BROWSER_OPEN_WITH_BUTTON_LABEL);
   SET_STRING("PASTE_BUTTON_LABEL", IDS_FILE_BROWSER_PASTE_BUTTON_LABEL);
   SET_STRING("PASTE_INTO_FOLDER_BUTTON_LABEL",
              IDS_FILE_BROWSER_PASTE_INTO_FOLDER_BUTTON_LABEL);
   SET_STRING("PREPARING_LABEL", IDS_FILE_BROWSER_PREPARING_LABEL);
+  SET_STRING("REFRESH_BUTTON_LABEL", IDS_FILE_BROWSER_REFRESH_BUTTON_LABEL);
   SET_STRING("REMOVABLE_DEVICE_DETECTION_TITLE",
              IDS_REMOVABLE_DEVICE_DETECTION_TITLE);
   SET_STRING("REMOVABLE_DEVICE_IMPORT_BUTTON_LABEL",
              IDS_REMOVABLE_DEVICE_IMPORT_BUTTON_LABEL);
   SET_STRING("REMOVABLE_DEVICE_IMPORT_MESSAGE",
              IDS_REMOVABLE_DEVICE_IMPORT_MESSAGE);
   SET_STRING("REMOVABLE_DEVICE_NAVIGATION_BUTTON_LABEL",
              IDS_REMOVABLE_DEVICE_NAVIGATION_BUTTON_LABEL);
   SET_STRING("REMOVABLE_DEVICE_NAVIGATION_MESSAGE",
              IDS_REMOVABLE_DEVICE_NAVIGATION_MESSAGE);
@@ skipping 90 matching lines @@
       base::StringPrintf(kHelpURLFormat, kNoActionForFileHelpNumber));
   dict->SetString("UI_LOCALE", extension_l10n_util::CurrentLocaleOrDefault());
 
   const std::string& app_locale = g_browser_process->GetApplicationLocale();
   webui::SetLoadTimeDataDefaults(app_locale, dict);
 
   return true;
 }
 
 }  // namespace extensions