Use the local Player for offline Storage

It makes no sense to refer to the Cast-proxied Player for offline
storage, so explicitly refer to the local Player instead.

Issue #261

Change-Id: I6b4e0cb828489724d334362d6e15da3d3ea12719

demo/main.js

@@ -32,6 +32,10 @@ shakaDemo.video_ = null;
 shakaDemo.player_ = null;
 
 
+/** @private {shaka.Player} */
+shakaDemo.localPlayer_ = null;
+
+
 /** @private {shakaExtern.SupportType} */
 shakaDemo.support_;
 
@@ -133,6 +137,7 @@ shakaDemo.init = function() {
       shakaDemo.video_ = shakaDemo.castProxy_.getVideo();
       shakaDemo.player_ = shakaDemo.castProxy_.getPlayer();
       shakaDemo.player_.addEventListener('error', shakaDemo.onErrorEvent_);
+      shakaDemo.localPlayer_ = localPlayer;
 
       shakaDemo.setupAssets_();
       shakaDemo.setupOffline_();

demo/offline_section.js

@@ -104,7 +104,7 @@ shakaDemo.setupOfflineAssets_ = function() {
     group = shakaDemo.offlineOptGroup_;
   }
 
-  var db = new Storage(shakaDemo.player_);
+  var db = new Storage(shakaDemo.localPlayer_);
   return db.list().then(function(storedContents) {
     storedContents.forEach(function(storedContent) {
       for (var i = 0; i < assetList.options.length; i++) {