Merge "Ignore null action in WebViewUpdateService." into main

        mWebViewUpdatedReceiver = new BroadcastReceiver() {

                @Override

                public void onReceive(Context context, Intent intent) {

                    final String action = intent.getAction();

                    if (action == null) {

                        return;

                    }

                    int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL);

                    switch (intent.getAction()) {

                    switch (action) {

                        case Intent.ACTION_PACKAGE_REMOVED:

                            // When a package is replaced we will receive two intents, one

                            // representing the removal of the old package and one representing the