[Battery usage U] Add an item "Others" in the app list to group small usage apps. This will make the total percetage 100%, which is easy to understand for users.

Bug: 258124173
Fix: 258124173
Test: manual
Change-Id: I5965eeb73a2071c4a9994655e4ed24ec3adf64e8

src/com/android/settings/fuelgauge/PowerUsageFeatureProvider.java

@@ -132,6 +132,11 @@ public interface PowerUsageFeatureProvider {
      */
     Intent getResumeChargeIntent(boolean isDockDefender);
 
+    /**
+     * Returns {@link Set} for the system component ids which are combined into others.
+     */
+    Set<Integer> getOthersSystemComponentSet(Context context);
+
     /**
      * Returns {@link Set} for hiding system component ids in the usage screen.
      */