ATT Entitlement changes in Settings to pass Tether Type.

ATT has different provisioning servers for BT,Wifi and USB Tethering and
Entitlement app need the type of Tethering to be passed before provisioning
request goes out.

Bug:17640036

Change-Id: I6683a747e1925716575ba683aeefc644ced7e37f
diff --git a/src/com/android/settings/TetherSettings.java b/src/com/android/settings/TetherSettings.java
index 8069d52..45d8dee 100644
--- a/src/com/android/settings/TetherSettings.java
+++ b/src/com/android/settings/TetherSettings.java
@@ -64,6 +64,7 @@
     private static final String USB_TETHER_SETTINGS = "usb_tether_settings";
     private static final String ENABLE_WIFI_AP = "enable_wifi_ap";
     private static final String ENABLE_BLUETOOTH_TETHERING = "enable_bluetooth_tethering";
+    private static final String TETHER_CHOICE = "TETHER_TYPE";
 
     private static final int DIALOG_AP_SETTINGS = 1;
 
@@ -117,6 +118,10 @@
     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
+
+        if(icicle != null) {
+            mTetherChoice = icicle.getInt(TETHER_CHOICE);
+        }
         addPreferencesFromResource(R.xml.tether_prefs);
 
         mUm = (UserManager) getSystemService(Context.USER_SERVICE);
@@ -180,6 +185,12 @@
         mView = new WebView(activity);
     }
 
+    @Override
+    public void onSaveInstanceState(Bundle savedInstanceState) {
+        savedInstanceState.putInt(TETHER_CHOICE, mTetherChoice);
+        super.onSaveInstanceState(savedInstanceState);
+    }
+
     private void initWifiTethering() {
         final Activity activity = getActivity();
         mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
@@ -472,6 +483,7 @@
         if (isProvisioningNeeded()) {
             Intent intent = new Intent(Intent.ACTION_MAIN);
             intent.setClassName(mProvisionApp[0], mProvisionApp[1]);
+            intent.putExtra(TETHER_CHOICE, mTetherChoice);
             startActivityForResult(intent, PROVISION_REQUEST);
         } else {
             startTethering();