arc: Fix crash on Arc window close.

chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc

Index: chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc
diff --git a/chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc b/chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc
index f768df800c37a31f70012e4c392b3aeb7a10ab7c..4c63e73f912ae6ccc12f22570ea8a7de30419100 100644
--- a/chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc
@@ -22,8 +22,10 @@
 #include "chrome/browser/ui/ash/launcher/extension_launcher_context_menu.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/arc/test/fake_app_instance.h"
+#include "components/exo/shell_surface.h"
 #include "components/prefs/pref_service.h"
 #include "ui/aura/window_event_dispatcher.h"
+#include "ui/views/widget/widget.h"
 
 class LauncherContextMenuTest : public ash::test::AshTestBase {
  protected:
@@ -66,6 +68,18 @@ class LauncherContextMenuTest : public ash::test::AshTestBase {
     return LauncherContextMenu::Create(controller_.get(), item, GetWmShelf());
   }
 
+  // Creates app window and set optional Arc application id.
+  views::Widget* CreateArcWindow(std::string& window_app_id) {
+    views::Widget::InitParams params(views::Widget::InitParams::TYPE_WINDOW);
+    views::Widget* widget = new views::Widget();
+    widget->Init(params);
+    widget->Show();
+    widget->Activate();
+    exo::ShellSurface::SetApplicationId(widget->GetNativeWindow(),
+                                        &window_app_id);
+    return widget;
+  }
+
   ArcAppTest& arc_test() { return arc_test_; }
 
   Profile* profile() { return profile_.get(); }
@@ -194,6 +208,8 @@ TEST_F(LauncherContextMenuTest, ArcLauncherContextMenuItemCheck) {
       menu->IsCommandIdEnabled(LauncherContextMenu::MENU_CHANGE_WALLPAPER));
 
   // Arc app is running.
+  std::string window_app_id1("org.chromium.arc.1");
+  CreateArcWindow(window_app_id1);
   arc_test().app_instance()->SendTaskCreated(1, arc_test().fake_apps()[0]);
   menu.reset(new ArcLauncherContextMenu(controller(), &item, wm_shelf));