[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/MobileDataPreferenceController.java

@@ -32,6 +32,7 @@ import androidx.preference.SwitchPreference;
 
 import com.android.settings.R;
 import com.android.settings.network.MobileDataContentObserver;
+import com.android.settings.wifi.WifiPickerTrackerHelper;
 import com.android.settingslib.core.lifecycle.LifecycleObserver;
 import com.android.settingslib.core.lifecycle.events.OnStart;
 import com.android.settingslib.core.lifecycle.events.OnStop;
@@ -54,6 +55,8 @@ public class MobileDataPreferenceController extends TelephonyTogglePreferenceCon
     @VisibleForTesting
     boolean mNeedDialog;
 
+    private WifiPickerTrackerHelper mWifiPickerTrackerHelper;
+
     public MobileDataPreferenceController(Context context, String key) {
         super(context, key);
         mSubscriptionManager = context.getSystemService(SubscriptionManager.class);
@@ -107,6 +110,9 @@ public class MobileDataPreferenceController extends TelephonyTogglePreferenceCon
         if (!mNeedDialog) {
             // Update data directly if we don't need dialog
             MobileNetworkUtils.setMobileDataEnabled(mContext, mSubId, isChecked, false);
+            if (mWifiPickerTrackerHelper != null) {
+                mWifiPickerTrackerHelper.setCarrierNetworkEnabled(isChecked);
+            }
             return true;
         }
 
@@ -149,6 +155,10 @@ public class MobileDataPreferenceController extends TelephonyTogglePreferenceCon
                 .createForSubscriptionId(mSubId);
     }
 
+    public void setWifiPickerTrackerHelper(WifiPickerTrackerHelper helper) {
+        mWifiPickerTrackerHelper = helper;
+    }
+
     @VisibleForTesting
     boolean isDialogNeeded() {
         final boolean enableData = !isChecked();