@Override
    public void onClick(View v) {
        int viewId = v.getId();
        switch (viewId) {
            case R.id.create_notification:
                createAndShowNotification();
                finish();
                break;
            default:
                //Unknown view clicked
        }
    }
This is the Activity that the Notification takes the user to.

The Notification sends the user to this activity with an EXTRA_URL. Use it to call Chrome Custom
Tabs. The user will return to it when coming back from the web content.
demos/src/main/java/org/chromium/customtabsdemos/NotificationParentActivity.java