Remove code for Mac and Linux virtual print drivers.

cloud_print/virtual_driver/posix/virtual_driver_posix.cc

-// Copyright (c) 2011 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 <cups/backend.h>
-
-#include "base/at_exit.h"
-#include "base/base_paths.h"
-#include "base/command_line.h"
-#include "base/file_path.h"
-#include "base/logging.h"
-#include "base/path_service.h"
-
-#include "cloud_print/virtual_driver/posix/printer_driver_util_posix.h"
-
-// Main function for backend.
-int main(int argc, const char* argv[]) {
-  // With no arguments, send identification string as required by CUPS.
-  if (argc == 1) {
-    printf("file GCP-driver:/ \"GCP Virtual Driver\" \"GCP Virtual Driver\" "
-         "\"MFG:Google Inc.;MDL:GCP Virtual Driver;DES:GCP Virtual Driver;"
-         "CLS:PRINTER;CMD:POSTSCRIPT;\"\n");
-    return 0;
-  }
-
-  if (argc < 6 || argc > 7) {
-    fprintf(stderr, "Usage: GCP-Driver job-id user "
-        "title copies options [file]\n");
-    return 0;
-  }
-
-  // We can run the backend as root or unpriveliged user lp
-  // Since we want to launch the printer dialog as the user
-  // that initiated the print job, we run the backend as root
-  // and then setuid to the user that started the print job
-  printer_driver_util::SetUser(argv[2]);
-
-  // AtExitManager is necessary to use the path service.
-  base::AtExitManager aemanager;
-  // CommandLine is only setup to enable logging, never used subseqeuently.
-  CommandLine::Init(argc, argv);
-  // Location for the log file.
-  std::string log_location = "/var/log/GCP-Driver.log";
-
-  // Set up logging.
-  logging::InitLogging(log_location.c_str(),
-             logging::LOG_ONLY_TO_FILE,
-             logging::LOCK_LOG_FILE,
-             logging::APPEND_TO_OLD_LOG_FILE,
-             logging::DISABLE_DCHECK_FOR_NON_OFFICIAL_RELEASE_BUILDS);
-
-  // Temporary directory to hold the output file.
-  FilePath temp_dir;
-  // Strings to hold details of current job.
-  std::string current_user;
-  std::string set_var;
-  std::string job_title;
-  std::string job_id;
-  std::string file_name;
-  std::string print_ticket;
-
-  // Get temp directory to hold spool file.
-  if (!PathService::Get(base::DIR_TEMP, &temp_dir)) {
-    LOG(ERROR) << "Unable to get DIR_TEMP";
-    return CUPS_BACKEND_CANCEL;
-  }
-  // Get details from command line and set spool path.
-  current_user = argv[2];
-  job_title = argv[3];
-  job_id = argv[1];
-  printer_driver_util::GetOptions(argv[5], &print_ticket);
-  file_name = current_user + "-"  + job_title + "-" + job_id;
-  FilePath output_path = temp_dir.Append(file_name);
-
-  // However, the input file can only be read as root.
-  if (!setuid(0))  {
-    PLOG(ERROR) << "Unable to setuid back to 0";
-  }
-
-  if (argc == 7) {
-    // Read from file if specified.
-    FILE* input_pdf = fopen(argv[6], "r");
-    if (input_pdf == NULL) {
-      LOG(ERROR) << "Unable to read input PDF";
-      return CUPS_BACKEND_CANCEL;
-    }
-    // File is opened.
-    printer_driver_util::WriteToTemp(input_pdf, output_path);
-  } else {
-    // Otherwise, read from stdin.
-    printer_driver_util::WriteToTemp(stdin, output_path);
-  }
-
-  // Change back to user to launch Chrome.
-  printer_driver_util::SetUser(argv[2]);
-  PLOG(ERROR) << print_ticket;
-  // Launch Chrome and pass the print job onto Cloud Print.
-  printer_driver_util::LaunchPrintDialog(output_path.value(), job_title,
-                                         current_user, print_ticket);
-
-  return 0;
-}