Simplify fileBrowserPrivate.getDriveConnectionStatus().

chrome/browser/chromeos/drive/file_system_util.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/drive/file_system_util.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 371 matching lines @@
     return false;
 
   // Disable Drive if preference is set. This can happen with commandline flag
   // --disable-drive or enterprise policy, or with user settings.
   if (profile->GetPrefs()->GetBoolean(prefs::kDisableDrive))
     return false;
 
   return true;
 }
 
+ConnectionStatusType GetDriveConnectionStatus(Profile* profile) {
+  drive::DriveServiceInterface* const drive_service =
+      drive::util::GetDriveServiceByProfile(profile);
+
+  if (!drive_service)
+    return DRIVE_DISCONNECTED_NOSERVICE;
+  if (net::NetworkChangeNotifier::IsOffline())
+    return DRIVE_DISCONNECTED_NONETWORK;
+  if (!drive_service->CanSendRequest())
+    return DRIVE_DISCONNECTED_NOTREADY;
+
+  const bool is_connection_cellular =
+      net::NetworkChangeNotifier::IsConnectionCellular(
+          net::NetworkChangeNotifier::GetConnectionType());
+  const bool disable_sync_over_celluar =
+      profile->GetPrefs()->GetBoolean(prefs::kDisableDriveOverCellular);
+
+  if (is_connection_cellular && disable_sync_over_celluar)
+    return DRIVE_CONNECTED_METERED;
+  return DRIVE_CONNECTED;
+}
+
 }  // namespace util
 }  // namespace drive