Renamed app list position flag to --enable-centered-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 17b6716c149978303603787af3eb12c1e84d3118..ee92a8ba35a1c42a682d52b83595ed69dbafe66a 100644
--- a/ui/app_list/app_list_switches.h
+++ b/ui/app_list/app_list_switches.h
@@ -11,11 +11,11 @@ namespace app_list {
 namespace switches {
 
 // Please keep these flags sorted.
+APP_LIST_EXPORT extern const char kCenterAppList[];
 APP_LIST_EXPORT extern const char kDisableSyncAppList[];
 APP_LIST_EXPORT extern const char kDisableVoiceSearch[];
 APP_LIST_EXPORT extern const char kEnableAppInfo[];
 APP_LIST_EXPORT extern const char kEnableExperimentalAppList[];
-APP_LIST_EXPORT extern const char kEnableExperimentalAppListPosition[];
 APP_LIST_EXPORT extern const char kEnableHotwordAlwaysOn[];
 APP_LIST_EXPORT extern const char kEnableSyncAppList[];
 
@@ -29,7 +29,7 @@ bool APP_LIST_EXPORT IsAppInfoEnabled();
 
 bool APP_LIST_EXPORT IsExperimentalAppListEnabled();
 
-bool APP_LIST_EXPORT IsExperimentalAppListPositionEnabled();
+bool APP_LIST_EXPORT IsAppListCentered();
 
 }  // namespace switches
 }  // namespace app_list