[CUPS] Fix a typo error of the fake printer's protocol.

chromeos/printing/fake_printer_discoverer.cc

 // Copyright 2016 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 "chromeos/printing/fake_printer_discoverer.h"
 
 #include <algorithm>
 #include <iterator>
 #include <memory>
 
@@ skipping 49 matching lines @@
     : discovery_running_(false), weak_ptr_factory_(this) {
   for (int i = 0; i < 12; i++) {
     // printer doesn't have a ppd
     printers_.emplace_back(base::StringPrintf("GUID%2d", i));
     printers_[i].set_display_name(base::StringPrintf("PrinterName%2d", i));
     printers_[i].set_description(
         base::StringPrintf("Printer%2dDescription", i));
     printers_[i].set_manufacturer("Chromium");
     printers_[i].set_model(i % 3 == 0 ? "Inkjet" : "Laser Maker");
     printers_[i].set_uri(
-        base::StringPrintf("lpr://192.168.1.%d:9100/bldg/printer", i));
+        base::StringPrintf("lpd://192.168.1.%d:9100/bldg/printer", i));
     printers_[i].set_uuid(
         base::StringPrintf("UUID-%4d-%4d-%4d-UUID", i * 3, i * 2, i));
   }
 }
 
 void FakePrinterDiscoverer::EmitPrinters(size_t start, size_t end) {
   if (!discovery_running_ || start >= printers_.size() || end < start)
     return;
 
   size_t clipped_start = std::max(static_cast<size_t>(0), start);
@@ skipping 15 matching lines @@
         base::TimeDelta::FromMilliseconds(2000));
   } else {
     // We're done.  Notify observers.
     discovery_running_ = false;
     for (auto observer : observers_)
       observer->OnDiscoveryDone();
   }
 }
 
 }  // namespace chromeos