Change modification date to include time and 'today' and 'yesterday' for appropriate dates.

chrome/browser/chromeos/extensions/file_browser_private_api.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/extensions/file_browser_private_api.h"
 
 #include <utility>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 1504 matching lines @@
 
   SET_STRING(IDS_FILE_BROWSER, SEARCH_NO_MATCHING_FILES);
   SET_STRING(IDS_FILE_BROWSER, SEARCH_EXPAND);
 
   SET_STRING(IDS_FILE_BROWSER, CHANGE_DEFAULT_MENU_ITEM);
   SET_STRING(IDS_FILE_BROWSER, CHANGE_DEFAULT_CAPTION);
   SET_STRING(IDS_FILE_BROWSER, DEFAULT_ACTION_LABEL);
 
   SET_STRING(IDS_FILE_BROWSER, DETAIL_VIEW_TOOLTIP);
   SET_STRING(IDS_FILE_BROWSER, THUMBNAIL_VIEW_TOOLTIP);
+
+  SET_STRING(IDS_FILE_BROWSER, TIME_TODAY);
+  SET_STRING(IDS_FILE_BROWSER, TIME_YESTERDAY);
 #undef SET_STRING
 
   dict->SetBoolean("PDF_VIEW_ENABLED",
       file_manager_util::ShouldBeOpenedWithPdfPlugin(profile(), ".pdf"));
 
   ChromeURLDataManager::DataSource::SetFontAndTextDirection(dict);
 
   dict->SetBoolean("ENABLE_GDATA", gdata::util::IsGDataAvailable(profile()));
 
 #if defined(USE_ASH)
@@ skipping 603 matching lines @@
   gdata::GDataSystemService* system_service =
       gdata::GDataSystemServiceFactory::GetForProfile(profile_);
   if (!system_service || !system_service->file_system())
     return false;
 
   FilePath directory_path = GetVirtualPathFromURL(GURL(file_url_as_string));
   system_service->file_system()->RequestDirectoryRefresh(directory_path);
 
   return true;
 }