Remove Language and Input duplicates

Change the keys in the Language and Input screen for the
gesture and tts-output settings so they can be disabled
in search. Then change the preference controllers to take
a key as input to avoid crashes on the other screens with
these settings.

Merge for: ag/2098173/

Test: make RunSettingsRoboTests
Bug: 33701673
Change-Id: I8bc0776131fcac5a6edf7e8271bc53252c2fc719

src/com/android/settings/gestures/DoubleTapPowerSettings.java

@@ -33,6 +33,7 @@ import java.util.List;
 public class DoubleTapPowerSettings extends DashboardFragment {
 
     private static final String TAG = "DoubleTapPower";
+    private static final String KEY_DOUBLE_TAP_POWER = "gesture_double_tap_power";
 
     @Override
     public int getMetricsCategory() {
@@ -57,7 +58,8 @@ public class DoubleTapPowerSettings extends DashboardFragment {
     private static List<PreferenceController> buildPreferenceControllers(Context context,
             Lifecycle lifecycle) {
         final List<PreferenceController> controllers = new ArrayList<>();
-        controllers.add(new DoubleTapPowerPreferenceController(context, lifecycle));
+        controllers.add(new DoubleTapPowerPreferenceController(context, lifecycle,
+                KEY_DOUBLE_TAP_POWER));
         return controllers;
     }