Fix JSDuck warnings

Change-Id: Ibc3f49c55ded5490fcb071f0ccf9f25a71a06c97
Warning: categories.json Class 've.NodeFactory' not found in categories file
Warning: ve.ui.ContentDialog.js:8: Unknown type ve.ui.Surface
Warning: ve.ui.MetaDialog.js:8: Unknown type ve.ui.Surface
Warning: ve.ui.Dialog.js:8: Unknown type ve.ui.Surface
Merge "Fix JSDuck warnings"