Fix conversion of locale from BCP47 language tag

Bug: 17187528
Change-Id: Ifcf707c9be736885f3fc79f3c36087ecf9092971

core/java/android/service/voice/VoiceInteractionService.java

@@ -208,7 +208,7 @@ public class VoiceInteractionService extends Service {
     @Deprecated
     public final AlwaysOnHotwordDetector createAlwaysOnHotwordDetector(
             String keyphrase, String locale, AlwaysOnHotwordDetector.Callback callback) {
-        return createAlwaysOnHotwordDetector(keyphrase, new Locale(locale), callback);
+        return createAlwaysOnHotwordDetector(keyphrase, Locale.forLanguageTag(locale), callback);
     }
 
     /**

tests/VoiceInteraction/src/com/android/test/voiceinteraction/MainInteractionService.java

@@ -69,7 +69,7 @@ public class MainInteractionService extends VoiceInteractionService {
                 + Arrays.toString(getKeyphraseEnrollmentInfo().listKeyphraseMetadata()));
 
         mHotwordDetector = createAlwaysOnHotwordDetector(
-                "Hello There", new Locale("en-US"), mHotwordCallback);
+                "Hello There", Locale.forLanguageTag("en-US"), mHotwordCallback);
     }
 
     @Override