Remove chrome://flags/#enable-app-list, move kEnableAppList to app_list::

ui/app_list/app_list_switches.h

Index: ui/app_list/app_list_switches.h
diff --git a/ui/app_list/app_list_switches.h b/ui/app_list/app_list_switches.h
index e5070db04fd5bdedab67807a9083447623ae0a8f..d710f5b86b5dbc28b7879ff2da0afb9976c4ffc2 100644
--- a/ui/app_list/app_list_switches.h
+++ b/ui/app_list/app_list_switches.h
@@ -15,6 +15,7 @@ namespace switches {
 APP_LIST_EXPORT extern const char kCustomLauncherPage[];
 APP_LIST_EXPORT extern const char kDisableAppListDismissOnBlur[];
 APP_LIST_EXPORT extern const char kDisableDriveAppsInAppList[];
+APP_LIST_EXPORT extern const char kEnableAppList[];
 APP_LIST_EXPORT extern const char kEnableCenteredAppList[];
 APP_LIST_EXPORT extern const char kEnableExperimentalAppList[];
 APP_LIST_EXPORT extern const char kDisableExperimentalAppList[];
@@ -24,6 +25,7 @@ APP_LIST_EXPORT extern const char kEnableSyncAppList[];
 APP_LIST_EXPORT extern const char kDisableSyncAppList[];
 APP_LIST_EXPORT extern const char kDisableDriveSearchInAppLauncher[];
 APP_LIST_EXPORT extern const char kDisableLauncherSearchProviderApi[];
+APP_LIST_EXPORT extern const char kResetAppListInstallState[];
 
 #if defined(OS_MACOSX)
 APP_LIST_EXPORT extern const char kEnableMacViewsAppList[];