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/applications/ApplicationFeatureProviderImpl.java

@@ -19,11 +19,8 @@ package com.android.settings.applications;
 import android.app.Fragment;
 import android.content.Context;
 import android.content.Intent;
-import android.content.pm.ActivityInfo;
 import android.content.pm.ComponentInfo;
-import android.content.pm.ProviderInfo;
 import android.content.pm.ResolveInfo;
-import android.content.pm.ServiceInfo;
 import android.content.pm.UserInfo;
 import android.os.RemoteException;
 import android.os.UserHandle;