[Sync] Refactored ProfileSyncService and remove its backend() function

chrome/browser/sync/sync_ui_util.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/browser/sync/sync_ui_util.h"
 
 #include "app/l10n_util.h"
 #include "base/i18n/number_formatting.h"
 #include "base/i18n/time_formatting.h"
 #include "base/string_util.h"
@@ skipping 342 matching lines @@
     if (service->unrecoverable_error_detected()) {
       strings->Set("unrecoverable_error_detected", new FundamentalValue(true));
       strings->SetString("unrecoverable_error_message",
                          service->unrecoverable_error_message());
       tracked_objects::Location loc(service->unrecoverable_error_location());
       std::string location_str;
       loc.Write(true, true, &location_str);
       strings->SetString("unrecoverable_error_location", location_str);
     } else if (!service->sync_initialized()) {
       strings->SetString("summary", "Sync not yet initialized");
-    } else if (service->backend() == NULL) {
-      strings->SetString("summary",
-          "Unrecoverable error detected. Backend is null when it shouldnt be");
-      NOTREACHED();
     } else {
       browser_sync::ModelSafeRoutingInfo routes;
-      service->backend()->GetModelSafeRoutingInfo(&routes);
+      service->GetModelSafeRoutingInfo(&routes);
       ListValue* routing_info = new ListValue();
       strings->Set("routing_info", routing_info);
       browser_sync::ModelSafeRoutingInfo::const_iterator it = routes.begin();
       for (; it != routes.end(); ++it) {
         DictionaryValue* val = new DictionaryValue;
         val->SetString("model_type", ModelTypeToString(it->first));
         val->SetString("group", ModelSafeGroupToString(it->second));
         routing_info->Append(val);
       }
 
       sync_ui_util::AddBoolSyncDetail(details,
           "Autofill Migrated",
-          service->backend()->GetAutofillMigrationState() ==
+          service->GetAutofillMigrationState() ==
           syncable::MIGRATED);
       syncable::AutofillMigrationDebugInfo info =
-          service->backend()->GetAutofillMigrationDebugInfo();
+          service->GetAutofillMigrationDebugInfo();
 
       sync_ui_util::AddIntSyncDetail(details,
                                      "Bookmarks created during migration",
                                      info.bookmarks_added_during_migration);
       sync_ui_util::AddIntSyncDetail(details,
           "Autofill entries created during migration",
           info.autofill_entries_added_during_migration);
       sync_ui_util::AddIntSyncDetail(details,
           "Autofill Profiles created during migration",
           info.autofill_profile_added_during_migration);
 
       DictionaryValue* val = new DictionaryValue;
       val->SetString("stat_name", "Autofill Migration Time");
       val->SetString("stat_value", ConstructTime(info.autofill_migration_time));
       details->Append(val);
     }
   }
 }
 
 }  // namespace sync_ui_util