[SyncFS] Handle dirty tracker IDs in MetadataDatabaseIndexOnDisk

chrome/browser/sync_file_system/drive_backend/metadata_database_index_unittest.cc

 // Copyright 2014 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_file_system/drive_backend/metadata_database_index.h"
 
 #include "chrome/browser/sync_file_system/drive_backend/drive_backend_constants.h"
 #include "chrome/browser/sync_file_system/drive_backend/drive_backend_test_util.h"
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.h"
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.pb.h"
@@ skipping 89 matching lines @@
   EXPECT_EQ(kInvalidTrackerID,
             index->PickMultiBackingFilePath().parent_id);
   EXPECT_EQ(kPlaceholderTrackerID, index->PickDirtyTracker());
 }
 
 TEST(MetadataDatabaseIndexTest, UpdateTest) {
   scoped_ptr<MetadataDatabaseIndex> index =
       MetadataDatabaseIndex::CreateForTesting(
           CreateTestDatabaseContents().get());
 
-  index->DemoteDirtyTracker(kPlaceholderTrackerID);
+  index->DemoteDirtyTracker(kPlaceholderTrackerID, NULL);
   EXPECT_EQ(kInvalidTrackerID, index->PickDirtyTracker());
-  index->PromoteDemotedDirtyTrackers();
+  index->PromoteDemotedDirtyTrackers(NULL);
   EXPECT_EQ(kPlaceholderTrackerID, index->PickDirtyTracker());
 
   FileMetadata metadata;
   ASSERT_TRUE(index->GetFileMetadata("file_id", &metadata));
   FileTracker app_root_tracker;
   ASSERT_TRUE(index->GetFileTracker(kAppRootTrackerID, &app_root_tracker));
 
   int64 new_tracker_id = 100;
   scoped_ptr<FileTracker> new_tracker =
       test_util::CreateTracker(metadata, new_tracker_id, &app_root_tracker);
   new_tracker->set_active(false);
   index->StoreFileTracker(new_tracker.Pass(), NULL);
 
   EXPECT_EQ("file_id", index->PickMultiTrackerFileID());
   EXPECT_EQ(ParentIDAndTitle(kAppRootTrackerID, std::string("file")),
             index->PickMultiBackingFilePath());
 
   index->RemoveFileMetadata("file_id", NULL);
   index->RemoveFileTracker(kFileTrackerID, NULL);
 
   EXPECT_FALSE(index->GetFileMetadata("file_id", NULL));
   EXPECT_FALSE(index->GetFileTracker(kFileTrackerID, NULL));
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system