6dcdfab906
TTS engine default locale is set independently from the system locale. If TTS engine default locale is not set, it defaults to the system locale. If user decides to set TTS locale, ability to default to the current system locale is lost (until device is wiped). This change makes settings wipe the TTS engine default locale value if user selects language that is system language. This allows TTS to track system language if user changes it. If system language is not available in TTS, language field is set to "language not selected" value. This change require a small change in framework/base to make previously private method public (TtsEngines.getDefaultLocale). + Selected language is displayed in language preference summary (matches all other language preferences) + Removing and then adding "language" and 'install languages' preferences looks glitchy, not they are disabled (grayed out) if unavailable. Bug: 8613986 Change-Id: Ic4bde97ef7406adb64cc03efbe660275360ba3af