Gallery: Add debugMe method to Gallery.

ui/file_manager/gallery/js/mosaic_mode_unittest.html

Index: ui/file_manager/gallery/js/mosaic_mode_unittest.html
diff --git a/ui/file_manager/gallery/js/gallery_item_unittest.html b/ui/file_manager/gallery/js/mosaic_mode_unittest.html
similarity index 56%
copy from ui/file_manager/gallery/js/gallery_item_unittest.html
copy to ui/file_manager/gallery/js/mosaic_mode_unittest.html
index 70ef7d0ffe0f4989752d529ba9a10829d3d5227a..44a09de3a3016cfd544f372e9241db70d82aa393 100644
--- a/ui/file_manager/gallery/js/gallery_item_unittest.html
+++ b/ui/file_manager/gallery/js/mosaic_mode_unittest.html
@@ -3,21 +3,19 @@
   -- Use of this source code is governed by a BSD-style license that can be
   -- found in the LICENSE file.
   -->
-<script>
-// Define mock Gallery class to define Gallery.Item class.
-var Gallery = function() {};
-</script>
-<!-- Should be loaded before volume_manager.js -->
-<script src="../../file_manager/common/js/volume_manager_common.js"></script>
-<!-- Others -->
+<script>var Gallery = {};</script>
 <script src="../../../webui/resources/js/assert.js"></script>
 <script src="../../../webui/resources/js/cr.js"></script>
 <script src="../../../webui/resources/js/cr/event_target.js"></script>
 <script src="../../../webui/resources/js/cr/ui/array_data_model.js"></script>
-<script src="../../../webui/resources/js/load_time_data.js"></script>
+<script src="../../../webui/resources/js/cr/ui/list_selection_controller.js"></script>
+<script src="../../../webui/resources/js/cr/ui/list_selection_model.js"></script>
+<script src="../../file_manager/common/js/file_type.js"></script>
 <script src="../../file_manager/common/js/mock_entry.js"></script>
-<script src="../../file_manager/common/js/unittest_util.js"></script>
 <script src="../../file_manager/common/js/util.js"></script>
+<script src="../../file_manager/foreground/js/thumbnail_loader.js"></script>
 <script src="gallery_item.js"></script>
+<script src="image_editor/image_util.js"></script>
+<script src="mosaic_mode.js"></script>
 
-<script src="gallery_item_unittest.js"></script>
+<script src="mosaic_mode_unittest.js"></script>