Tweak search result for adaptive brightness

- Create a new controller for auto brightness in
auto_brightness_detail.xml.
- We only show slice version for search result.
- Change slice summary for adaptive brightness.

Test: visual
Fixes: 130651278
Change-Id: If9b71735bbb2a0ee22676d9dfedab2cf9e778493

src/com/android/settings/display/AutoBrightnessPreferenceController.java

@@ -19,7 +19,6 @@ import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL;
 
 import android.content.Context;
 import android.provider.Settings;
-import android.text.TextUtils;
 
 import com.android.settings.R;
 import com.android.settings.core.TogglePreferenceController;
@@ -52,15 +51,10 @@ public class AutoBrightnessPreferenceController extends TogglePreferenceControll
     public int getAvailabilityStatus() {
         return mContext.getResources().getBoolean(
                 com.android.internal.R.bool.config_automatic_brightness_available)
-                ? AVAILABLE
+                ? AVAILABLE_UNSEARCHABLE
                 : UNSUPPORTED_ON_DEVICE;
     }
 
-    @Override
-    public boolean isSliceable() {
-        return TextUtils.equals(getPreferenceKey(), "auto_brightness");
-    }
-
     @Override
     public CharSequence getSummary() {
         return mContext.getText(isChecked()