Log source with visibility change

- Add a method in VisibilityLoggerMixin to log visible event using
  LogMaker, which allows logging additional FIELD_CONTEXT field.
- In Utils.startFragment, add current page's metricsCategory as an extra
  to next page.
- In next page's onResume(), extract the previous page's metricsCategory
  and send it to VisibilityLoggerMixin.visible()
- Update all caller with additional paramters

Change-Id: I8e1f2597fa465b7d3aa16fa1d21c052a3219694a
Fix: 35359289
Test: RunSettingsRoboTests

src/com/android/settings/datausage/BillingCyclePreference.java

@@ -22,6 +22,8 @@ import android.os.Bundle;
 import android.os.RemoteException;
 import android.support.v7.preference.Preference;
 import android.util.AttributeSet;
+
+import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
 import com.android.settings.Utils;
 import com.android.settings.datausage.CellDataPreference.DataStateListener;
@@ -76,7 +78,7 @@ public class BillingCyclePreference extends Preference implements TemplatePrefer
         Bundle args = new Bundle();
         args.putParcelable(DataUsageList.EXTRA_NETWORK_TEMPLATE, mTemplate);
         return Utils.onBuildStartFragmentIntent(getContext(), BillingCycleSettings.class.getName(),
-                args, null, 0, getTitle(), false);
+                args, null, 0, getTitle(), false, MetricsProto.MetricsEvent.VIEW_UNKNOWN);
     }
 
     private final DataStateListener mListener = new DataStateListener() {