[sync] skeleton implementation of AutocompleteSyncBridge

ios/chrome/browser/sync/ios_chrome_sync_client.mm

 // Copyright 2015 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 "ios/chrome/browser/sync/ios_chrome_sync_client.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
+#include "components/autofill/core/browser/webdata/autocomplete_sync_bridge.h"
 #include "components/autofill/core/browser/webdata/autocomplete_syncable_service.h"
 #include "components/autofill/core/browser/webdata/autofill_profile_syncable_service.h"
 #include "components/autofill/core/browser/webdata/autofill_wallet_metadata_syncable_service.h"
 #include "components/autofill/core/browser/webdata/autofill_wallet_syncable_service.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
 #include "components/browser_sync/browser_sync_switches.h"
 #include "components/browser_sync/profile_sync_components_factory_impl.h"
 #include "components/browser_sync/profile_sync_service.h"
 #include "components/dom_distiller/core/dom_distiller_service.h"
 #include "components/history/core/browser/history_model_worker.h"
@@ skipping 314 matching lines @@
                  browser_state_)
           ->GetDeviceInfoSyncBridge()
           ->AsWeakPtr();
     case syncer::READING_LIST: {
       ReadingListModel* reading_list_model =
           ReadingListModelFactory::GetForBrowserState(browser_state_);
       if (reading_list_model)
         return reading_list_model->GetModelTypeSyncBridge()->AsWeakPtr();
       return base::WeakPtr<syncer::ModelTypeSyncBridge>();
     }
+    case syncer::AUTOFILL:
+      return autofill::AutocompleteSyncBridge::FromWebDataService(
+                 web_data_service_.get())
+          ->AsWeakPtr();
     default:
       NOTREACHED();
       return base::WeakPtr<syncer::ModelTypeSyncBridge>();
   }
 }
 
 scoped_refptr<syncer::ModelSafeWorker>
 IOSChromeSyncClient::CreateModelWorkerForGroup(syncer::ModelSafeGroup group) {
   DCHECK_CURRENTLY_ON(web::WebThread::UI);
   switch (group) {
@@ skipping 51 matching lines @@
         IOSChromeProfileSyncServiceFactory::GetForBrowserState(browser_state);
     if (profile_sync_service != nullptr) {
       const syncer::DeviceInfoTracker* tracker =
           profile_sync_service->GetDeviceInfoTracker();
       if (tracker != nullptr) {
         trackers->push_back(tracker);
       }
     }
   }
 }