arc: Don't show default Arc apps for managed users with Arc-disabled.

chrome/browser/ui/app_list/arc/arc_default_app_list.h

Index: chrome/browser/ui/app_list/arc/arc_default_app_list.h
diff --git a/chrome/browser/ui/app_list/arc/arc_default_app_list.h b/chrome/browser/ui/app_list/arc/arc_default_app_list.h
index de8cbb2ea91c71f84e5031568d37d6c0842589af..9b1f511cb8f461c5f4dbf4ae31f5bce0dd8bbe6c 100644
--- a/chrome/browser/ui/app_list/arc/arc_default_app_list.h
+++ b/chrome/browser/ui/app_list/arc/arc_default_app_list.h
@@ -69,6 +69,11 @@ class ArcDefaultAppList {
 
   const AppInfoMap& app_map() const { return apps_; }
 
+  // Marks default apps as hidden for user, for example in case Arc is managed
+  // and disabled.
+  void set_hidden(bool hidden) { hidden_ = hidden; }
+  bool is_hidden() const { return hidden_; }
+
  private:
   // Defines mapping package name to uninstalled state.
   using PacakageMap = std::map<std::string, bool>;
@@ -79,6 +84,7 @@ class ArcDefaultAppList {
   // Unowned pointer.
   Delegate* const delegate_;
   content::BrowserContext* const context_;
+  bool hidden_ = true;
 
   AppInfoMap apps_;
   PacakageMap packages_;