[SyncFS] Handle trashed flag in change list as missing file

chrome/browser/sync_file_system/drive_backend/metadata_database.cc

 // 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.
 
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.h"
 
 #include <algorithm>
 #include <stack>
 
 #include "base/bind.h"
@@ skipping 87 matching lines @@
   else if (file_resource.IsHostedDocument())
     details->set_file_kind(FILE_KIND_UNSUPPORTED);
   else
     details->set_file_kind(FILE_KIND_FILE);
 
   details->set_md5(file_resource.md5_checksum());
   details->set_etag(file_resource.etag());
   details->set_creation_time(file_resource.created_date().ToInternalValue());
   details->set_modification_time(
       file_resource.modified_date().ToInternalValue());
-  details->set_missing(false);
+  details->set_missing(file_resource.labels().is_trashed());
 }
 
 scoped_ptr<FileMetadata> CreateFileMetadataFromFileResource(
     int64 change_id,
     const google_apis::FileResource& resource) {
   scoped_ptr<FileMetadata> file(new FileMetadata);
   file->set_file_id(resource.file_id());
 
   FileDetails* details = file->mutable_details();
   details->set_change_id(change_id);
@@ skipping 1758 matching lines @@
   index_->StoreFileMetadata(app_root_metadata.Pass());
   index_->StoreFileTracker(app_root_tracker.Pass());
 }
 
 void MetadataDatabase::DetachFromSequence() {
   worker_sequence_checker_.DetachFromSequence();
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system