ash: Use more inclusive language in //ash

Fix a couple instances of "master". As of this CL, the following terms
no longer appear in //ash -- master, slave, white_?list, black_?list.

Bug: 1097644
Change-Id: I02f59e12cf587c97c7c12f88f00fac2a468e3cbd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2339926
Commit-Queue: James Cook <jamescook@chromium.org>
Commit-Queue: Xiyuan Xia <xiyuan@chromium.org>
Auto-Submit: James Cook <jamescook@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795181}

ash/app_list/model/app_list_model.h

@@ -26,8 +26,8 @@ class AppListItem;
 class AppListItemList;
 class AppListModelObserver;
 
-// Master model of app list that holds AppListItemList, which owns a list
-// of AppListItems and is displayed in the grid view.
+// Main model for the app list. Holds AppListItemList, which owns a list of
+// AppListItems and is displayed in the grid view.
 // NOTE: Currently this class observes |top_level_item_list_|. The View code may
 // move entries in the item list directly (but can not add or remove them) and
 // the model needs to notify its observers when this occurs.

ash/dbus/README.md

@@ -13,4 +13,4 @@ See `//ash/README.md` for details on mash.
 See [Chrome OS D-Bus Usage in Chrome] for information about adding D-Bus
 services.
 
-[Chrome OS D-Bus Usage in Chrome]: https://chromium.googlesource.com/chromiumos/docs/+/master/dbus_in_chrome.md
+[Chrome OS D-Bus Usage in Chrome]: https://chromium.googlesource.com/chromiumos/docs/+/HEAD/dbus_in_chrome.md