Centralize the automatic storage manager on check.

Bug: 70893105
Test: Existing tests pass.
Change-Id: I83fa0e1033eb530a02eca230d0dd79495cbcbc9d

src/com/android/settings/deletionhelper/AutomaticStorageManagerSettings.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *      http://www.apache.org/licenses/LICENSE-2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -96,7 +96,7 @@ public class AutomaticStorageManagerSettings extends DashboardFragment
     @Override
     public void onResume() {
         super.onResume();
-        mDaysToRetain.setEnabled(isStorageManagerEnabled());
+        mDaysToRetain.setEnabled(Utils.isStorageManagerEnabled(getContext()));
     }
 
     @Override
@@ -153,12 +153,6 @@ public class AutomaticStorageManagerSettings extends DashboardFragment
         return indices.length - 1;
     }
 
-    private boolean isStorageManagerEnabled() {
-        return Settings.Secure.getInt(
-                        getContentResolver(), Settings.Secure.AUTOMATIC_STORAGE_MANAGER_ENABLED, 0)
-                != 0;
-    }
-
     private static List<AbstractPreferenceController> buildPreferenceControllers(Context context) {
         final List<AbstractPreferenceController> controllers = new ArrayList<>();
         controllers.add(new AutomaticStorageManagerDescriptionPreferenceController(context));