Extending the expiry milestone date for tab groups and tab hover cards.

Change-Id: I13e40a605cd1c891a533e4d2a4d9a62c3ccbe3a4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1566020
Auto-Submit: Charlene Yan <cyan@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Commit-Queue: Bret Sepulveda <bsep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#650455}

chrome/browser/flag-metadata.json

@@ -2919,17 +2919,17 @@
   {
     "name": "tab-groups",
     "owners": [ "chrome-desktop-ui-seattle@google.com", "bsep" ],
-    "expiry_milestone": 76
+    "expiry_milestone": 82
   },
   {
     "name": "tab-hover-cards",
     "owners": [ "corising", "//chrome/browser/ui/views/tabs/OWNERS" ],
-    "expiry_milestone": 76
+    "expiry_milestone": 82
   },
   {
     "name": "tab-hover-card-images",
     "owners": [ "dfried", "corising", "//chrome/browser/ui/views/tabs/OWNERS" ],
-    "expiry_milestone": 76
+    "expiry_milestone": 82
   },
   {
     "name": "tint-gl-composited-content",