Don\'t let sign-in to network app appear in recents when it finishes

am: 6a776c8317

Change-Id: Id0bca631f030c8c344b1bcac52f731152ab858a0

packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java

@@ -96,7 +96,7 @@ public class CaptivePortalLoginActivity extends Activity {
         // Exit app if Network disappears.
         final NetworkCapabilities networkCapabilities = mCm.getNetworkCapabilities(mNetwork);
         if (networkCapabilities == null) {
-            finish();
+            finishAndRemoveTask();
             return;
         }
         mNetworkCallback = new NetworkCallback() {
@@ -163,7 +163,7 @@ public class CaptivePortalLoginActivity extends Activity {
                 mCaptivePortal.useNetwork();
                 break;
         }
-        finish();
+        finishAndRemoveTask();
     }
 
     @Override