[Provider Model] Implement the carrner network selection settings

- Add WifiPickerTrackerHelper to reuse the library

- User taps on carrier network preference
  - Calls MergedCarrierEntry#connect()

- User toggles mobile data On/Off
  - Calls MergedCarrierEntry#setEnabled(true/false)

Bug: 175761096
Test:
- Manual Test
- atest NetworkMobileProviderControllerTest \
        SubscriptionsPreferenceControllerTest \
        WifiPickerTrackerHelperTest

Change-Id: Ia311b10ca7a44a536556c1889ee65743af379822

src/com/android/settings/network/telephony/MobileDataDialogFragment.java

@@ -28,6 +28,7 @@ import androidx.appcompat.app.AlertDialog;
 
 import com.android.settings.R;
 import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
+import com.android.settings.wifi.WifiPickerTrackerHelper;
 
 
 /**
@@ -50,6 +51,8 @@ public class MobileDataDialogFragment extends InstrumentedDialogFragment impleme
     private int mType;
     private int mSubId;
 
+    private WifiPickerTrackerHelper mWifiPickerTrackerHelper;
+
     public static MobileDataDialogFragment newInstance(int type, int subId) {
         final MobileDataDialogFragment dialogFragment = new MobileDataDialogFragment();
 
@@ -65,6 +68,8 @@ public class MobileDataDialogFragment extends InstrumentedDialogFragment impleme
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         mSubscriptionManager = getContext().getSystemService(SubscriptionManager.class);
+        mWifiPickerTrackerHelper = new WifiPickerTrackerHelper(getSettingsLifecycle(), getContext(),
+                null /* WifiPickerTrackerCallback */);
     }
 
     @Override
@@ -124,11 +129,17 @@ public class MobileDataDialogFragment extends InstrumentedDialogFragment impleme
             case TYPE_DISABLE_DIALOG:
                 MobileNetworkUtils.setMobileDataEnabled(getContext(), mSubId, false /* enabled */,
                         false /* disableOtherSubscriptions */);
+                if (mWifiPickerTrackerHelper != null) {
+                    mWifiPickerTrackerHelper.setCarrierNetworkEnabled(false);
+                }
                 break;
             case TYPE_MULTI_SIM_DIALOG:
                 mSubscriptionManager.setDefaultDataSubId(mSubId);
                 MobileNetworkUtils.setMobileDataEnabled(getContext(), mSubId, true /* enabled */,
                         true /* disableOtherSubscriptions */);
+                if (mWifiPickerTrackerHelper != null) {
+                    mWifiPickerTrackerHelper.setCarrierNetworkEnabled(true);
+                }
                 break;
             default:
                 throw new IllegalArgumentException("unknown type " + mType);