Merge "PrintSpooler: Avoid crash in DocumentTransformer shutdown" into main

                    @Override

                    protected void onPostExecute(String error) {

                        try {

                            mContext.unbindService(DocumentTransformer.this);

                            mCallback.accept(error);

                        } catch (IllegalArgumentException e) {

                            // Unbinding can fail if the PrintActivity has already been torn down

                            // before the document transform completes.  Since this is about to

                            // exit, there's no need to attempt additional error recovery.

                            Log.w(

                                    LOG_TAG,

                                    "Unable to unbind PdfManipulationService: "

                                            + e

                                            + ". Original error: "

                                            + error);

                        }

                    }

                }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);