Move from drive/other to drive/root should not use the copy+delete bypass.

chrome/browser/chromeos/drive/file_system/move_operation.cc

 // Copyright (c) 2012 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/chromeos/drive/file_system/move_operation.h"
 
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/file_system/operation_observer.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/chromeos/drive/job_scheduler.h"
@@ skipping 194 matching lines @@
   }
   metadata_->MoveEntryToDirectoryOnUIThread(src_path, dest_dir_path, callback);
 }
 
 void MoveOperation::RemoveFromDirectory(
     const std::string& resource_id,
     const std::string& directory_resource_id,
     const FileOperationCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
+  // Moving files out from "drive/other" special folder for storing orphan files
+  // has no meaning in the server. Just skip the step.
+  if (util::IsSpecialResourceId(directory_resource_id)) {
+    callback.Run(FILE_ERROR_OK);
+    return;
+  }
+
   scheduler_->RemoveResourceFromDirectory(
       directory_resource_id,
       resource_id,
       base::Bind(&MoveOperation::RemoveFromDirectoryCompleted,
                  weak_ptr_factory_.GetWeakPtr(),
                  callback));
 }
 
 void MoveOperation::RemoveFromDirectoryCompleted(
     const FileOperationCallback& callback,
     google_apis::GDataErrorCode status) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   callback.Run(util::GDataToFileError(status));
 }
 
 }  // namespace file_system
 }  // namespace drive