Move useful printing backend code from chrome/service/cloud_print to printing...

chrome/service/cloud_print/cloud_print_proxy.cc

 // Copyright (c) 2010 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 "chrome/service/cloud_print/cloud_print_proxy.h"
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/values.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/json_pref_store.h"
 #include "chrome/service/cloud_print/cloud_print_consts.h"
+#include "chrome/service/cloud_print/print_system.h"
 #include "chrome/service/service_process.h"
 
 // This method is invoked on the IO thread to launch the browser process to
 // display a desktop notification that the Cloud Print token is invalid and
 // needs re-authentication.
 static void ShowTokenExpiredNotificationInBrowser() {
   DCHECK(g_service_process->io_thread()->message_loop_proxy()->
       BelongsToCurrentThread());
   FilePath exe_path;
   PathService::Get(base::FILE_EXE, &exe_path);
@@ skipping 101 matching lines @@
 
 void CloudPrintProxy::Shutdown() {
   DCHECK(CalledOnValidThread());
   if (backend_.get())
     backend_->Shutdown();
   backend_.reset();
 }
 
 // Notification methods from the backend. Called on UI thread.
 void CloudPrintProxy::OnPrinterListAvailable(
-    const cloud_print::PrinterList& printer_list) {
+    const printing::PrinterList& printer_list) {
   DCHECK(CalledOnValidThread());
   // We could potentially show UI here allowing the user to select which
   // printers to register. For now, we just register all.
   backend_->RegisterPrinters(printer_list);
 }
 
 void CloudPrintProxy::OnAuthenticated(
     const std::string& cloud_print_token,
     const std::string& cloud_print_xmpp_token,
     const std::string& email) {
   DCHECK(CalledOnValidThread());
   cloud_print_email_ = email;
   service_prefs_->prefs()->SetString(prefs::kCloudPrintAuthToken,
                                      cloud_print_token);
   service_prefs_->prefs()->SetString(prefs::kCloudPrintXMPPAuthToken,
                                      cloud_print_xmpp_token);
   service_prefs_->prefs()->SetString(prefs::kCloudPrintEmail, email);
   service_prefs_->WritePrefs();
 }
 
 void CloudPrintProxy::OnAuthenticationFailed() {
   DCHECK(CalledOnValidThread());
   // If authenticated failed, we will disable the cloud print proxy.
   DisableForUser();
   // Launch the browser to display a notification that the credentials have
   // expired.
   g_service_process->io_thread()->message_loop_proxy()->PostTask(
       FROM_HERE, NewRunnableFunction(&ShowTokenExpiredNotificationInBrowser));
 }
-