diff --git a/lib/media/drm_engine.js b/lib/media/drm_engine.js
index <HASH>..<HASH> 100644
--- a/lib/media/drm_engine.js
+++ b/lib/media/drm_engine.js
@@ -1750,6 +1750,7 @@ shaka.media.DrmEngine.timeout_ = function(seconds) {
  *
  * @param {!Array.<shaka.extern.Variant>} variants
  * @param {!Object.<string, string>} keySystems
+ * @private
  */
 shaka.media.DrmEngine.replaceDrmInfo_ = function(variants, keySystems) {
   const drmInfos = [];
diff --git a/lib/offline/storage.js b/lib/offline/storage.js
index <HASH>..<HASH> 100644
--- a/lib/offline/storage.js
+++ b/lib/offline/storage.js
@@ -1291,6 +1291,7 @@ shaka.offline.Storage.verifyConfig_ = function(config) {
  * Go over a period and issue warnings for any suspicious properties.
  *
  * @param {shaka.extern.Period} period
+ * @private
  */
 shaka.offline.Storage.validatePeriod_ = function(period) {
   // Make sure that the period has not been reduced to nothing.
Add newly missing @private annotations

Issue #<I>

Change-Id: I<I>cd2ab5b<I>d<I>b5f2f<I>b<I>d<I>d