Ensure that isolated apps use the right cookies for media requests.

chrome/browser/profiles/off_the_record_profile_impl.cc

Index: chrome/browser/profiles/off_the_record_profile_impl.cc
diff --git a/chrome/browser/profiles/off_the_record_profile_impl.cc b/chrome/browser/profiles/off_the_record_profile_impl.cc
index c50d8447fc9b96f65024b76fd8b4add013ef9d08..9c971b86af7df41d2ebb8b7c68f740aa0e38b42c 100644
--- a/chrome/browser/profiles/off_the_record_profile_impl.cc
+++ b/chrome/browser/profiles/off_the_record_profile_impl.cc
@@ -281,9 +281,9 @@ net::URLRequestContextGetter*
 }
 
 net::URLRequestContextGetter*
-    OffTheRecordProfileImpl::GetRequestContextForMedia() {
+    OffTheRecordProfileImpl::GetRequestContextForMedia(int renderer_child_id) {
   // In OTR mode, media request context is the same as the original one.
-  return io_data_.GetMainRequestContextGetter();
+  return GetRequestContextForRenderProcess(renderer_child_id);
 }
 
 net::URLRequestContextGetter*