drm@1.4: ANAPIC doc review follow-up

/**

 * Returned by getLogMessages to report error diagnostics to the

 * app.

 *

 * The |message| field is for informational purposes only, and

 * NOT meant to be parsed programmatically when handling errors.

 * For programmatic error handling, please check the return |Status|

 * of APIs instead.

 */

struct LogMessage {

  /**

   * Epoch time in milliseconds.

   */

  int64_t timeMs;

  LogPriority priority;

  string message;