Fix bug #12898564 Settings Crash on Renaming the device.

- remove the call to PreferencesActivity as we are no more using the PreferencesActivity

Also set correct activity title with the new selected BT name for the device.

Change-Id: I03497187e0410ff2bba87bdb04a197938d1ea967

src/com/android/settings/bluetooth/BluetoothNameDialogFragment.java

@@ -26,7 +26,6 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
 import android.text.Editable;
 import android.text.InputFilter;
 import android.text.TextWatcher;
@@ -179,9 +178,8 @@ public final class BluetoothNameDialogFragment extends DialogFragment implements
             mDeviceNameUpdated = true;
             mDeviceNameEdited = false;
             mDeviceNameView.setText(mLocalAdapter.getName());
+            getActivity().setTitle(mLocalAdapter.getName());
         }
-        PreferenceActivity activity = (PreferenceActivity)getActivity();
-        activity.showBreadCrumbs(mLocalAdapter.getName(), "");
     }
 
     public void afterTextChanged(Editable s) {