Blocking number takes user back to blocked numbers list

Bug:25456614
Change-Id: I6fdd34a0d619053d632e7364fc8ccaba8f8ef15f
diff --git a/src/com/android/dialer/list/BlockedListSearchFragment.java b/src/com/android/dialer/list/BlockedListSearchFragment.java
index 08a9c49..94036ae 100644
--- a/src/com/android/dialer/list/BlockedListSearchFragment.java
+++ b/src/com/android/dialer/list/BlockedListSearchFragment.java
@@ -15,6 +15,7 @@
  */
 package com.android.dialer.list;
 
+import android.app.Activity;
 import android.os.Bundle;
 import android.support.v7.app.ActionBar;
 import android.support.v7.app.AppCompatActivity;
@@ -182,7 +183,7 @@
                             number,
                             R.id.blocked_numbers_activity_container,
                             getFragmentManager(),
-                            null /* callback */);
+                            BlockedListSearchFragment.this);
                 } else {
                     Toast.makeText(getContext(), getString(R.string.alreadyBlocked, number),
                             Toast.LENGTH_SHORT).show();
@@ -199,7 +200,7 @@
 
     @Override
     public void onChangeFilteredNumberSuccess() {
-        BlockedNumbersSettingsActivity activity = (BlockedNumbersSettingsActivity) getActivity();
+        Activity activity = getActivity();
         if (activity == null) {
             return;
         }