In I629245100f4ca430a88e450939b90d075e7021f1, languageOverlay styles and
LanguageSearcher styles were split into two different files. This commit
mimics that change in skinStyles. All languageOverlay specific styles
were moved to languageOverlay.less, while all LanguageSearcher styles
were moved to LanguageSearcher.less.
Other chagnes:
* Changed a reference in init.js
Bug: T215657
Change-Id: I395a61cd6051ad5c6b6601205f112b55f5ab8273