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/ResetNetwork.java

@@ -98,7 +98,8 @@ public class ResetNetwork extends OptionsMenuFragment {
             SubscriptionInfo subscription = mSubscriptions.get(selectedIndex);
             args.putInt(PhoneConstants.SUBSCRIPTION_KEY, subscription.getSubscriptionId());
         }
-        ((SettingsActivity) getActivity()).startPreferencePanel(ResetNetworkConfirm.class.getName(),
+        ((SettingsActivity) getActivity()).startPreferencePanel(
+                this, ResetNetworkConfirm.class.getName(),
                 args, R.string.reset_network_confirm_title, null, null, 0);
     }