Local NTP, Realbox: match omnibox light mode + classic theme selected/hover row bg colors

Bug: 1020450
Change-Id: I8216b7dc529d40a9766b2007cc3609f9dfb2c1c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1896306Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Dan Beam <dbeam@chromium.org>
Auto-Submit: Dan Beam <dbeam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711982}

chrome/browser/resources/local_ntp/local_ntp.css

@@ -295,11 +295,11 @@ html[dir=rtl] :-webkit-any(.clock-icon, .search-icon) {
 }
 
 #realbox-matches a:-webkit-any(:hover, .selected) {
-  background-color: rgb(var(--GG100-rgb));
+  background-color: rgb(232, 232, 233);
 }
 
 #realbox-matches a:focus-within {
-  background-color: rgb(var(--GG200-rgb));
+  background-color: rgb(219, 219, 220);
 }
 
 #realbox-matches .match {