Add framework for anomaly detection flags

This cl adds isAnomalyDetectorEnabled(type), which decides whether
to turn on specific check with that type.

Added method is used in AnomalyLoader.

Bug: 36924669
Test: RunSettingsRoboTests
Change-Id: I71c6acb1c58c24453a1936c5c36f59fe4e86cfd4

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

@@ -24,6 +24,7 @@ import android.net.Uri;
 import android.os.Process;
 import com.android.internal.os.BatterySipper;
 import com.android.internal.util.ArrayUtils;
+import com.android.settings.fuelgauge.anomaly.Anomaly;
 
 public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider {
 
@@ -111,4 +112,9 @@ public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider
     public long getTimeRemainingEstimate(Cursor cursor) {
         return 0;
     }
+
+    @Override
+    public boolean isAnomalyDetectorEnabled(@Anomaly.AnomalyType int type) {
+        return false;
+    }
 }