Added PrinterDriverInfo and PrintBackend::GetPrinterDriverInfo for windows.

printing/backend/print_backend_cups.cc

 // Copyright (c) 2012 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 "printing/backend/print_backend.h"
 
 #include "build/build_config.h"
 
 #include <dlfcn.h>
 #include <errno.h>
@@ skipping 95 matching lines @@
 
   // PrintBackend implementation.
   virtual bool EnumeratePrinters(PrinterList* printer_list) OVERRIDE;
 
   virtual std::string GetDefaultPrinterName() OVERRIDE;
 
   virtual bool GetPrinterCapsAndDefaults(
       const std::string& printer_name,
       PrinterCapsAndDefaults* printer_info) OVERRIDE;
 
+  virtual bool GetPrinterDriverInfo(const std::string& printer_name,
+                                    PrinterDriverInfo* driver_info) OVERRIDE;
+
   virtual bool IsValidPrinter(const std::string& printer_name) OVERRIDE;
 
  private:
   // Following functions are wrappers around corresponding CUPS functions.
   // <functions>2()  are called when print server is specified, and plain
   // version in another case. There is an issue specifing CUPS_HTTP_DEFAULT
   // in the <functions>2(), it does not work in CUPS prior to 1.4.
   int GetDests(cups_dest_t** dests);
   FilePath GetPPD(const char* name);
 
@@ skipping 92 matching lines @@
     printer_info->printer_capabilities.swap(content);
     printer_info->caps_mime_type = "application/pagemaker";
     // In CUPS, printer defaults is a part of PPD file. Nothing to upload here.
     printer_info->printer_defaults.clear();
     printer_info->defaults_mime_type.clear();
   }
 
   return res;
 }
 
+bool PrintBackendCUPS::GetPrinterDriverInfo(const std::string& printer_name,
+                                            PrinterDriverInfo* driver_info) {
+  // TODO(vitalybuka): MAC implementation. http://crbug.com/108194
+  return false;
+}
+
 bool PrintBackendCUPS::IsValidPrinter(const std::string& printer_name) {
   // This is not very efficient way to get specific printer info. CUPS 1.4
   // supports cupsGetNamedDest() function. However, CUPS 1.4 is not available
   // everywhere (for example, it supported from Mac OS 10.6 only).
   PrinterList printer_list;
   EnumeratePrinters(&printer_list);
 
   PrinterList::iterator it;
   for (it = printer_list.begin(); it != printer_list.end(); ++it)
     if (it->printer_name == printer_name)
@@ skipping 72 matching lines @@
                    << ", HTTP error: " << http_error;
         file_util::Delete(ppd_path, false);
         ppd_path.clear();
       }
     }
   }
   return ppd_path;
 }
 
 }  // namespace printing