drive: Call OnDirectoryChanged from EntryRevertPerformer

chrome/browser/chromeos/drive/sync/entry_revert_performer.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_DRIVE_SYNC_ENTRY_REVERT_PERFORMER_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_SYNC_ENTRY_REVERT_PERFORMER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/drive/file_errors.h"
 #include "google_apis/drive/gdata_errorcode.h"
 
 namespace base {
 class SequencedTaskRunner;
 }  // namespace base
 
 namespace google_apis {
 class ResourceEntry;
 }  // namespace google_apis
 
 namespace drive {
 
 class JobScheduler;
 class ResourceEntry;
 
+namespace file_system {
+class OperationObserver;
+}  // namespace file_system
+
 namespace internal {
 
 class ResourceMetadata;
 
 // This class is responsible to revert local changes of an entry.
 class EntryRevertPerformer {
  public:
   EntryRevertPerformer(base::SequencedTaskRunner* blocking_task_runner,
+                       file_system::OperationObserver* observer,
                        JobScheduler* scheduler,
                        ResourceMetadata* metadata);
   ~EntryRevertPerformer();
 
   // Requests the server for metadata of the entry specified by |local_id|
   // and overwrites the locally stored entry with it.
   // Invokes |callback| when finished with the result of the operation.
   // |callback| must not be null.
   void RevertEntry(const std::string& local_id,
                    const FileOperationCallback& callback);
 
  private:
   // Part of RevertEntry(). Called after local metadata look up.
   void RevertEntryAfterPrepare(const FileOperationCallback& callback,
                                scoped_ptr<ResourceEntry> entry,
                                FileError error);
 
   // Part of RevertEntry(). Called after GetResourceEntry is completed.
   void RevertEntryAfterGetResourceEntry(
       const FileOperationCallback& callback,
       const std::string& local_id,
       google_apis::GDataErrorCode status,
       scoped_ptr<google_apis::ResourceEntry> resource_entry);
 
+  // Part of RevertEntry(). Called after local metadata is updated.
+  void RevertEntryAfterFinishRevert(
+      const FileOperationCallback& callback,
+      const std::vector<base::FilePath>* changed_directories,
+      FileError error);
+
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
+  file_system::OperationObserver* observer_;
   JobScheduler* scheduler_;
   ResourceMetadata* metadata_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<EntryRevertPerformer> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(EntryRevertPerformer);
 };
 
 }  // namespace internal
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_SYNC_ENTRY_REVERT_PERFORMER_H_