Add comment to RemoteAppsManager

Bug: 1101208
Change-Id: Ica3c8f5dd1d2592bb02b3e1c1f6f637732909139
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2398703
Auto-Submit: Jit Yao Yap <jityao@google.com>
Reviewed-by: James Cook <jamescook@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#807062}

chrome/browser/chromeos/remote_apps/remote_apps_manager.h

@@ -44,6 +44,7 @@ class RemoteAppsImpl;
 // This service is only created for Managed Guest Sessions.
 // The IDs of the added apps and folders are GUIDs generated using
 // |base::GenerateGUID()|.
+// See crbug.com/1101208 for more details on Remote Apps.
 class RemoteAppsManager : public KeyedService,
                           public apps::RemoteApps::Delegate,
                           public app_list::AppListSyncableService::Observer,