AU: Class to perform delta updates.

src/platform/update_engine/filesystem_copier_action.cc

Index: src/platform/update_engine/filesystem_copier_action.cc
diff --git a/src/platform/update_engine/filesystem_copier_action.cc b/src/platform/update_engine/filesystem_copier_action.cc
index f9b6869fc8314115539512e08d957b980b7f31ad..2a361eed74c8e6b1bf6cf7672a07a70a1b40387d 100644
--- a/src/platform/update_engine/filesystem_copier_action.cc
+++ b/src/platform/update_engine/filesystem_copier_action.cc
@@ -93,7 +93,7 @@ void FilesystemCopierAction::TerminateProcessing() {
 bool FilesystemCopierAction::Mount(const string& device,
                                    const string& mountpoint) {
   CHECK(!is_mounted_);
-  if(utils::MountFilesystem(device, mountpoint))
+  if(utils::MountFilesystem(device, mountpoint, 0))
     is_mounted_ = true;
   return is_mounted_;
 }