Reduce namespaces for ash::launcher::AppLauncherId

chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.h

Index: chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.h
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.h b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.h
index 871876a63c0a0f1e424ec9235332af27f72f44d1..1a732720c3329448d62c69d304eb58429922ef88 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.h
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.h
@@ -156,7 +156,7 @@ class ChromeLauncherControllerImpl
   // Creates a new app shortcut item and controller on the shelf at |index|.
   // Use kInsertItemAtEnd to add a shortcut as the last item.
   ash::ShelfID CreateAppShortcutLauncherItem(
-      const ash::launcher::AppLauncherId& app_launcher_id,
+      const ash::AppLauncherId& app_launcher_id,
       int index);
 
  private:
@@ -178,7 +178,7 @@ class ChromeLauncherControllerImpl
   // Creates a new app shortcut item and controller on the shelf at |index|.
   // Use kInsertItemAtEnd to add a shortcut as the last item.
   ash::ShelfID CreateAppShortcutLauncherItemWithType(
-      const ash::launcher::AppLauncherId& app_launcher_id,
+      const ash::AppLauncherId& app_launcher_id,
       int index,
       ash::ShelfItemType shelf_item_type);