drive: Remove polling code from DriveFileSystem

chrome/browser/ui/webui/chromeos/drive_internals_ui.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/drive_internals_ui.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/format_macros.h"
@@ skipping 502 matching lines @@
           weak_ptr_factory_.GetWeakPtr()));
 }
 
 void DriveInternalsWebUIHandler::OnGetFilesystemMetadataForDeltaUpdate(
     const drive::DriveFileSystemMetadata& metadata) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   base::DictionaryValue delta_update_status;
   delta_update_status.SetBoolean("push-notification-enabled",
                                  metadata.push_notification_enabled);
-  delta_update_status.SetInteger("polling-interval-sec",
-                                 metadata.polling_interval_sec);
   delta_update_status.SetString(
       "last-update-check-time",
       google_apis::util::FormatTimeAsStringLocaltime(
           metadata.last_update_check_time));
   delta_update_status.SetString(
       "last-update-check-error",
       drive::DriveFileErrorToString(metadata.last_update_check_error));
 
   web_ui()->CallJavascriptFunction("updateDeltaUpdateStatus",
                                    delta_update_status);
@@ skipping 223 matching lines @@
       content::WebUIDataSource::Create(chrome::kChromeUIDriveInternalsHost);
   source->AddResourcePath("drive_internals.css", IDR_DRIVE_INTERNALS_CSS);
   source->AddResourcePath("drive_internals.js", IDR_DRIVE_INTERNALS_JS);
   source->SetDefaultResource(IDR_DRIVE_INTERNALS_HTML);
 
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource::Add(profile, source);
 }
 
 }  // namespace chromeos