Remove more dead app list code.

chrome/common/pref_names.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.
 
 // Constants for the names of various preferences, for easier changing.
 
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 
 #include <stddef.h>
@@ skipping 788 matching lines @@
 #if BUILDFLAG(ENABLE_APP_LIST)
 extern const char kAppListProfile[];
 extern const char kLastAppListLaunchPing[];
 extern const char kAppListLaunchCount[];
 extern const char kLastAppListAppLaunchPing[];
 extern const char kAppListAppLaunchCount[];
 extern const char kAppLauncherHasBeenEnabled[];
 extern const char kAppListEnableMethod[];
 extern const char kAppListEnableTime[];
 extern const char kAppListLocalState[];
-#if defined(OS_MACOSX)
-extern const char kAppLauncherShortcutVersion[];
-#endif
 extern const char kShowAppLauncherPromo[];
 extern const char kAppLauncherDriveAppMapping[];
 extern const char kAppLauncherUninstalledDriveApps[];
 #endif  // BUILDFLAG(ENABLE_APP_LIST)
 
 #if defined(OS_WIN)
 extern const char kAppLaunchForMetroRestart[];
 extern const char kAppLaunchForMetroRestartProfile[];
 #endif
 extern const char kAppShortcutsVersion[];
@@ skipping 88 matching lines @@
 extern const char kHistoryPageIOSPromoDismissed[];
 #endif
 
 extern const char kSettingsResetPromptPromptWave[];
 extern const char kSettingsResetPromptLastTriggeredForDefaultSearch[];
 extern const char kSettingsResetPromptLastTriggeredForStartupUrls[];
 extern const char kSettingsResetPromptLastTriggeredForHomepage[];
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_