Reduce namespaces for ash::launcher::AppLauncherId

chrome/browser/ui/ash/chrome_launcher_prefs.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_ASH_CHROME_LAUNCHER_PREFS_H_
 #define CHROME_BROWSER_UI_ASH_CHROME_LAUNCHER_PREFS_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "ash/public/cpp/shelf_types.h"
 #include "base/macros.h"
 #include "components/sync_preferences/pref_service_syncable_observer.h"
 
 class LauncherControllerHelper;
 class PrefService;
 class Profile;
 
 namespace sync_preferences {
 class PrefServiceSyncable;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace ash {
-namespace launcher {
 
 class AppLauncherId;
 
+namespace launcher {
+
 // Path within the dictionary entries in the prefs::kPinnedLauncherApps list
 // specifying the extension ID of the app to be pinned by that entry.
 extern const char kPinnedAppsPrefAppIDPath[];
 
 extern const char kPinnedAppsPrefPinnedByPolicy[];
 
 // Value used as a placeholder in the list of pinned applications.
 // This is NOT a valid extension identifier so pre-M31 versions ignore it.
 extern const char kPinnedAppsPlaceholder[];
 
@@ skipping 63 matching lines @@
   // Profile prefs. Not owned.
   sync_preferences::PrefServiceSyncable* prefs_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeLauncherPrefsObserver);
 };
 
 }  // namespace launcher
 }  // namespace ash
 
 #endif  // CHROME_BROWSER_UI_ASH_CHROME_LAUNCHER_PREFS_H_