Update flag expiry

Update default-browser-setting and desktop-version-default

Bug: none
Change-Id: Ie58c2e6fa30b2b4688b5ca3b720b61dc7cfd9cb4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2506177
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Auto-Submit: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822085}

chrome/browser/flag-metadata.json

@@ -796,7 +796,7 @@
   {
     "name": "default-browser-setting",
     "owners": [ "gambard", "bling-flags" ],
-    "expiry_milestone": 87
+    "expiry_milestone": 89
   },
   {
     "name": "delay-async-script-execution",
@@ -816,7 +816,7 @@
   {
     "name": "desktop-version-default",
     "owners": [ "gambard", "bling-flags" ],
-    "expiry_milestone": 87
+    "expiry_milestone": 89
   },
   {
     "name": "destroy-profile-on-browser-close",