71cf0a32d0
With this CL, InputMethodSubtypeSwitchingController stop assuming that language part in locale string is up to 2-letter. this CL is not so risky because InputMethodSubtypeSwitchingController have used language part for nothing but sorting subtypes to determine the initial rotation order of IME switching. BUG: 16502987 Change-Id: Ib159ece0b7aa04f8fd7abc96c9a6e0832a4b7cd2