Remove all the ephemeral apps code.

chrome/browser/apps/shortcut_manager.h

 // Copyright 2013 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_APPS_SHORTCUT_MANAGER_H_
 #define CHROME_BROWSER_APPS_SHORTCUT_MANAGER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/profiles/profile_info_cache_observer.h"
@@ skipping 24 matching lines @@
   ~AppShortcutManager() override;
 
   // Updates all shortcuts if kAppShortcutsVersion in prefs is less than
   // kCurrentAppShortcutsVersion.
   void UpdateShortcutsForAllAppsIfNeeded();
 
   // extensions::ExtensionRegistryObserver.
   void OnExtensionWillBeInstalled(content::BrowserContext* browser_context,
                                   const extensions::Extension* extension,
                                   bool is_update,
-                                  bool from_ephemeral,
                                   const std::string& old_name) override;
   void OnExtensionUninstalled(content::BrowserContext* browser_context,
                               const extensions::Extension* extension,
                               extensions::UninstallReason reason) override;
 
   // ProfileInfoCacheObserver.
   void OnProfileWillBeRemoved(const base::FilePath& profile_path) override;
 
  private:
   void DeleteApplicationShortcuts(const extensions::Extension* extension);
 
   Profile* profile_;
   bool is_profile_info_cache_observer_;
   PrefService* prefs_;
 
   ScopedObserver<extensions::ExtensionRegistry,
                  extensions::ExtensionRegistryObserver>
       extension_registry_observer_;
 
   base::WeakPtrFactory<AppShortcutManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AppShortcutManager);
 };
 
 #endif  // CHROME_BROWSER_APPS_SHORTCUT_MANAGER_H_