PrepareForRestart 1395 net/disk_cache/blockfile/backend_impl.cc   PrepareForRestart();
PrepareForRestart  293 net/disk_cache/blockfile/backend_impl.h   void PrepareForRestart();
PrepareForRestart  826 net/disk_cache/blockfile/backend_impl_v3.cc   PrepareForRestart();
PrepareForRestart  205 net/disk_cache/blockfile/backend_impl_v3.h   void PrepareForRestart();