public static int e(String tag, String msg) {
        if (RePluginInternal.FOR_DEV) {
            return Log.e(TAG_PREFIX + tag, msg);
        }
        return -1;
    }
Send an error log message.

@param tag Used to identify the source of a log message.  It usually identifies
           the class or activity where the log call occurs.
@param msg The message you would like logged.
replugin-host-library/replugin-host-lib/src/main/java/com/qihoo360/replugin/helper/LogDebug.java