PendingUnregistrationRequests  504 google_apis/gcm/gcm_client_impl.cc   PendingUnregistrationRequests::iterator iter =
PendingUnregistrationRequests  260 google_apis/gcm/gcm_client_impl.h   PendingUnregistrationRequests pending_unregistration_requests_;
PendingUnregistrationRequests  261 google_apis/gcm/gcm_client_impl.h   STLValueDeleter<PendingUnregistrationRequests>