Create an AutofillBackend interface

chrome/browser/sync/profile_sync_service_autofill_unittest.cc

 // Copyright 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 <set>
 #include <string>
 #include <vector>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 315 matching lines @@
       user_share);
 }
 
 ACTION(MakeSharedChangeProcessor) {
   return new SharedChangeProcessor();
 }
 
 ACTION_P(MakeAutofillProfileSyncComponents, wds) {
   EXPECT_TRUE(BrowserThread::CurrentlyOn(BrowserThread::DB));
   if (!BrowserThread::CurrentlyOn(BrowserThread::DB))
-    return base::WeakPtr<syncer::SyncableService>();;
+    return base::WeakPtr<syncer::SyncableService>();
   return AutofillProfileSyncableService::FromWebDataService(wds)->AsWeakPtr();
 }
 
 class AbstractAutofillFactory {
  public:
   virtual DataTypeController* CreateDataTypeController(
       ProfileSyncComponentsFactory* factory,
       ProfileMock* profile,
       ProfileSyncService* service) = 0;
   virtual void SetExpectation(ProfileSyncComponentsFactoryMock* factory,
@@ skipping 1018 matching lines @@
   std::vector<AutofillEntry> sync_entries;
   std::vector<AutofillProfile> sync_profiles;
   ASSERT_TRUE(GetAutofillEntriesFromSyncDB(&sync_entries, &sync_profiles));
   EXPECT_EQ(3U, sync_entries.size());
   EXPECT_EQ(0U, sync_profiles.size());
   for (size_t i = 0; i < sync_entries.size(); i++) {
     DVLOG(1) << "Entry " << i << ": " << sync_entries[i].key().name()
              << ", " << sync_entries[i].key().value();
   }
 }