flags: assign and noexpire force-text-direction

Bug: None
Change-Id: I162bdbdb5de4a5f094cf631f769878cc90c46b85
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1602096
Auto-Submit: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#658508}

chrome/browser/flag-metadata.json

@@ -2064,8 +2064,10 @@
   },
   {
     "name": "force-text-direction",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
+    "owners": [ "pbos", "ellyjones" ],
+    // This flag is used for developers who don't speak an RTL language to QA
+    // RTL UI layout.
+    "expiry_milestone": -1
   },
   {
     "name": "force-ui-direction",

chrome/browser/flag-never-expire-list.json

@@ -56,6 +56,7 @@
   "extensions-on-chrome-urls",
   "force-effective-connection-type",
   "force-show-update-menu-badge",
+  "force-text-direction",
   "force-update-menu-type",
   "ignore-gpu-blacklist",
   "ignore-previews-blocklist",