Remove more dead app list code.

chrome/browser/ui/app_list/app_list_service.cc

Index: chrome/browser/ui/app_list/app_list_service.cc
diff --git a/chrome/browser/ui/app_list/app_list_service.cc b/chrome/browser/ui/app_list/app_list_service.cc
index 75753bfd00fe2f2b4ade5b3a898ed9a4dab29c16..ce4b76ef2322e5a4ed3987f33aaf20603b77604f 100644
--- a/chrome/browser/ui/app_list/app_list_service.cc
+++ b/chrome/browser/ui/app_list/app_list_service.cc
@@ -43,13 +43,7 @@ base::Time GetOriginalProcessStartTime(const base::CommandLine& command_line) {
     return base::Time::FromInternalValue(remote_start_time);
   }
 
-// base::CurrentProcessInfo::CreationTime() is only defined on some
-// platforms.
-#if defined(OS_LINUX)
   return base::CurrentProcessInfo::CreationTime();
-#else
-  return base::Time();
-#endif
 }
 
 StartupType GetStartupType(const base::CommandLine& command_line) {
@@ -149,10 +143,6 @@ void AppListService::RegisterPrefs(PrefRegistrySimple* registry) {
                                 ENABLE_NOT_RECORDED);
   registry->RegisterInt64Pref(prefs::kAppListEnableTime, 0);
 
-#if defined(OS_MACOSX)
-  registry->RegisterIntegerPref(prefs::kAppLauncherShortcutVersion, 0);
-#endif
-
   // Identifies whether we should show the app launcher promo or not. This
   // becomes false when the user dismisses the promo.
   registry->RegisterBooleanPref(prefs::kShowAppLauncherPromo, true);