Add RemoteChangeProcessor::ClearLocalChanges

chrome/browser/sync_file_system/remote_change_processor.h

Index: chrome/browser/sync_file_system/remote_change_processor.h
diff --git a/chrome/browser/sync_file_system/remote_change_processor.h b/chrome/browser/sync_file_system/remote_change_processor.h
index 3aa9b7e1e5287341301ce17ac709bc9be9d31a8c..98f943926ec4ca80d52642528d4c639e5a40fcbb 100644
--- a/chrome/browser/sync_file_system/remote_change_processor.h
+++ b/chrome/browser/sync_file_system/remote_change_processor.h
@@ -61,6 +61,13 @@ class RemoteChangeProcessor {
       const fileapi::FileSystemURL& url,
       const fileapi::SyncStatusCallback& callback) = 0;
 
+  // Clears all local changes. This should be called when the remote sync
+  // service reconciled or processed the existing local changes while
+  // processing a remote change.
+  virtual void ClearLocalChanges(
+      const fileapi::FileSystemURL& url,
+      const base::Closure& completion_callback) = 0;
+
   // Records a fake local change so that the change will be processed in the
   // next local sync.
   // This is called when the remote side wants to trigger a local sync