@Override
    public void onServiceDisconnected() {
        mClient = null;
        mCustomTabsSession = null;
        if (mConnectionCallback != null) mConnectionCallback.onCustomTabsDisconnected();
    }
@see {@link CustomTabsSession#mayLaunchUrl(Uri, Bundle, List)}.
@return true if call to mayLaunchUrl was accepted.
demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java