public boolean warmup(long flags) {
        try {
            return mService.warmup(flags);
        } catch (RemoteException e) {
            return false;
        }
    }
Warm up the browser process.

Allows the browser application to pre-initialize itself in the background. Significantly
speeds up URL opening in the browser. This is asynchronous and can be called several times.

@param flags Reserved for future use.
@return      Whether the warmup was successful.
customtabs/src/android/support/customtabs/CustomTabsClient.java