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/users/UserSettings.java

@@ -439,7 +439,7 @@ public class UserSettings extends SettingsPreferenceFragment
         if (userId == UserPreference.USERID_GUEST_DEFAULTS) {
             Bundle extras = new Bundle();
             extras.putBoolean(UserDetailsSettings.EXTRA_USER_GUEST, true);
-            ((SettingsActivity) getActivity()).startPreferencePanel(
+            ((SettingsActivity) getActivity()).startPreferencePanel(this,
                     UserDetailsSettings.class.getName(),
                     extras, R.string.user_guest, null, null, 0);
             return;
@@ -449,7 +449,7 @@ public class UserSettings extends SettingsPreferenceFragment
             Bundle extras = new Bundle();
             extras.putInt(RestrictedProfileSettings.EXTRA_USER_ID, userId);
             extras.putBoolean(RestrictedProfileSettings.EXTRA_NEW_USER, newUser);
-            ((SettingsActivity) getActivity()).startPreferencePanel(
+            ((SettingsActivity) getActivity()).startPreferencePanel(this,
                     RestrictedProfileSettings.class.getName(),
                     extras, R.string.user_restrictions_title, null,
                     null, 0);
@@ -459,7 +459,7 @@ public class UserSettings extends SettingsPreferenceFragment
         } else if (mUserCaps.mIsAdmin) {
             Bundle extras = new Bundle();
             extras.putInt(UserDetailsSettings.EXTRA_USER_ID, userId);
-            ((SettingsActivity) getActivity()).startPreferencePanel(
+            ((SettingsActivity) getActivity()).startPreferencePanel(this,
                     UserDetailsSettings.class.getName(),
                     extras,
                     -1, /* No title res id */