Do not register IME app window in launcher

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

Index: chrome/browser/ui/ash/launcher/app_window_launcher_controller.cc
diff --git a/chrome/browser/ui/ash/launcher/app_window_launcher_controller.cc b/chrome/browser/ui/ash/launcher/app_window_launcher_controller.cc
index f07f122c61831f18f8b09c1f762d8b6473d01707..ac0ae5f5c3c67bc66c3218252f6e352deaa11729 100644
--- a/chrome/browser/ui/ash/launcher/app_window_launcher_controller.cc
+++ b/chrome/browser/ui/ash/launcher/app_window_launcher_controller.cc
@@ -145,6 +145,11 @@ void AppWindowLauncherController::OnWindowActivated(aura::Window* new_active,
 }
 
 void AppWindowLauncherController::RegisterApp(AppWindow* app_window) {
+  // Windows created by IME extension should be treated the same way as the
+  // virtual keyboard window, which does not register itself in launcher.
+  if (app_window->is_ime_window())
+    return;
+
   aura::Window* window = app_window->GetNativeWindow();
   // Get the app's shelf identifier and add an entry to the map.
   DCHECK(window_to_app_shelf_id_map_.find(window) ==