drive: Call LoadIfNeeded before CreateDirectory.

chrome/browser/chromeos/drive/drive_file_system.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/drive_file_system.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
@@ skipping 371 matching lines @@
 }
 
 void DriveFileSystem::CreateDirectory(
     const base::FilePath& directory_path,
     bool is_exclusive,
     bool is_recursive,
     const FileOperationCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
+  change_list_loader_->LoadIfNeeded(
+      DirectoryFetchInfo(),
+      base::Bind(&DriveFileSystem::CreateDirectoryAfterLoad,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 directory_path, is_exclusive, is_recursive, callback));
+}
+
+void DriveFileSystem::CreateDirectoryAfterLoad(
+    const base::FilePath& directory_path,
+    bool is_exclusive,
+    bool is_recursive,
+    const FileOperationCallback& callback,
+    FileError load_error) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  if (load_error != FILE_ERROR_OK) {
+    callback.Run(load_error);
+    return;
+  }
+
   drive_operations_.CreateDirectory(
       directory_path, is_exclusive, is_recursive, callback);
 }
 
 void DriveFileSystem::CreateFile(const base::FilePath& file_path,
                                  bool is_exclusive,
                                  const FileOperationCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
@@ skipping 1386 matching lines @@
     return;
   }
 
   PlatformFileInfoProto entry_file_info;
   util::ConvertPlatformFileInfoToProto(*file_info, &entry_file_info);
   *entry_proto->mutable_file_info() = entry_file_info;
   callback.Run(FILE_ERROR_OK, entry_proto.Pass());
 }
 
 }  // namespace drive