Add LocalFileChangeTracker database to record non-synced dirty files

webkit/fileapi/syncable/local_file_change_tracker.h

Index: webkit/fileapi/syncable/local_file_change_tracker.h
diff --git a/webkit/fileapi/syncable/local_file_change_tracker.h b/webkit/fileapi/syncable/local_file_change_tracker.h
index 14e1bf2f2d77c8a4c76c75d80ed1cb178b7a42d8..3a48facebcc72397b62f0f66dddc15dc7fee405c 100644
--- a/webkit/fileapi/syncable/local_file_change_tracker.h
+++ b/webkit/fileapi/syncable/local_file_change_tracker.h
@@ -41,6 +41,7 @@ class FILEAPI_EXPORT LocalFileChangeTracker
   // (So that we can make sure DB operations are done before actual update
   // happens)
   LocalFileChangeTracker(LocalFileSyncStatus* sync_status,
+                         const FilePath& profile_path,
                          base::SequencedTaskRunner* file_task_runner);
   virtual ~LocalFileChangeTracker();
 
@@ -75,6 +76,8 @@ class FILEAPI_EXPORT LocalFileChangeTracker
   void CollectLastDirtyChanges(FileChangeMap* changes);
 
  private:
+  class TrackerDB;
+
   void RecordChange(const FileSystemURL& url, const FileChange& change);
 
   // Database related methods.
@@ -89,6 +92,8 @@ class FILEAPI_EXPORT LocalFileChangeTracker
 
   FileChangeMap changes_;
 
+  scoped_ptr<TrackerDB> tracker_db_;
+
   DISALLOW_COPY_AND_ASSIGN(LocalFileChangeTracker);
 };