[omnibox] Extend the life of some omnibox flags to 85

Extends the life of these flags:

enable-query-in-omnibox
omnibox-rich-entity-suggestions
omnibox-suggestion-transparency-options
omnibox-ui-max-autocomplete-matches

Bug: NONE
Change-Id: I6ba6d371f879f4d3c98c77f2fc3d28062b8cc0bc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1918284Reviewed-by: Kevin Bailey <krb@chromium.org>
Commit-Queue: Tommy Li <tommycli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#715560}

chrome/browser/flag-metadata.json

@@ -1684,7 +1684,7 @@
   {
     "name": "enable-query-in-omnibox",
     "owners": [ "tommycli", "chrome-omnibox-team@google.com" ],
-    "expiry_milestone": 80
+    "expiry_milestone": 85
   },
   {
     "name": "enable-quic",
@@ -2839,7 +2839,7 @@
   {
     "name": "omnibox-rich-entity-suggestions",
     "owners": [ "jdonnelly", "chrome-omnibox-team@google.com" ],
-    "expiry_milestone": 80
+    "expiry_milestone": 85
   },
   {
     "name": "omnibox-search-engine-logo",
@@ -2859,7 +2859,7 @@
   {
     "name": "omnibox-suggestion-transparency-options",
     "owners": [ "tommycli", "chrome-omnibox-team@google.com" ],
-    "expiry_milestone": 80
+    "expiry_milestone": 85
   },
   {
     "name": "omnibox-tab-switch-suggestions",
@@ -2894,7 +2894,7 @@
   {
     "name": "omnibox-ui-max-autocomplete-matches",
     "owners": [ "jdonnelly", "chrome-omnibox-team@google.com" ],
-    "expiry_milestone": 80
+    "expiry_milestone": 85
   },
   {
     "name": "omnibox-ui-one-click-unelide",