[SyncFS] Clear dirty flag on changelist application phase

chrome/browser/sync_file_system/drive_backend/metadata_database_index.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 "base/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 372 matching lines @@
     return ParentIDAndTitle(kInvalidTrackerID, std::string());
   return *multi_backing_file_paths_.begin();
 }
 
 int64 MetadataDatabaseIndex::PickDirtyTracker() const {
   if (dirty_trackers_.empty())
     return kInvalidTrackerID;
   return *dirty_trackers_.begin();
 }
 
+void MetadataDatabaseIndex::EnumerateDirtyTrackers(
+    const TrackerIDCallback& callback) const {
+  for (DirtyTrackers::iterator itr = dirty_trackers_.begin();
+       itr != dirty_trackers_.end(); ++itr) {
+    callback.Run(*itr);
+  }
+
+  for (DirtyTrackers::iterator itr = demoted_dirty_trackers_.begin();
+       itr != demoted_dirty_trackers_.end(); ++itr) {
+    callback.Run(*itr);
+  }
+}
+
 void MetadataDatabaseIndex::DemoteDirtyTracker(int64 tracker_id) {
   if (dirty_trackers_.erase(tracker_id))
     demoted_dirty_trackers_.insert(tracker_id);
 }
 
 bool MetadataDatabaseIndex::HasDemotedDirtyTracker() const {
   return !demoted_dirty_trackers_.empty();
 }
 
 void MetadataDatabaseIndex::PromoteDemotedDirtyTrackers() {
@@ skipping 330 matching lines @@
 
     DVLOG(3) << "  Remove from dirty_trackers_: " << tracker_id;
     dirty_trackers_.erase(tracker_id);
 
     demoted_dirty_trackers_.erase(tracker_id);
   }
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system