Migrate search result alias to CSS variables

Author: GuillaumeGomez

src/librustdoc/html/static/css/rustdoc.css

@@ -906,6 +906,13 @@ so that we can apply CSS-filters to change the arrow color in themes */
 	background-color: var(--search-result-link-focus-background-color);
 }
 
+.search-results .result-name span.alias {
+	color: var(--search-results-alias-color);
+}
+.search-results .result-name span.grey {
+	color: var(--search-results-grey-color);
+}
+
 .popover {
 	position: absolute;
 	right: 0;

src/librustdoc/html/static/css/themes/ayu.css

@@ -41,9 +41,11 @@ Original by Dempfi (https://github.com/dempfi/ayu)
 	--sidebar-current-link-background-color: transparent;
 	--search-result-link-focus-background-color: #3c3c3c;
 	--search-result-border-color: #aaa3;
+	--search-color: #fff;
+	--search-results-alias-color: #c5c5c5;
+	--search-results-grey-color: #999;
 	--stab-background-color: #314559;
 	--stab-code-color: #e6e1cf;
-	--search-color: #fff;
 	--code-highlight-kw-color: #ff7733;
 	--code-highlight-kw-2-color: #ff7733;
 	--code-highlight-lifetime-color: #ff7733;
@@ -202,13 +204,6 @@ pre.rust .kw-2, pre.rust .prelude-ty {}
 	filter: invert(100);
 }
 
-.search-results .result-name span.alias {
-	color: #c5c5c5;
-}
-.search-results .result-name span.grey {
-	color: #999;
-}
-
 #source-sidebar > .title {
 	color: #fff;
 }

src/librustdoc/html/static/css/themes/dark.css

@@ -36,9 +36,11 @@
 	--sidebar-current-link-background-color: #444;
 	--search-result-link-focus-background-color: #616161;
 	--search-result-border-color: #aaa3;
+	--search-color: #111;
+	--search-results-alias-color: #fff;
+	--search-results-grey-color: #ccc;
 	--stab-background-color: #314559;
 	--stab-code-color: #e6e1cf;
-	--search-color: #111;
 	--code-highlight-kw-color: #ab8ac1;
 	--code-highlight-kw-2-color: #769acb;
 	--code-highlight-lifetime-color: #d97f26;
@@ -103,13 +105,6 @@ details.rustdoc-toggle > summary::before {
 	color: #888;
 }
 
-.search-results .result-name span.alias {
-	color: #fff;
-}
-.search-results .result-name span.grey {
-	color: #ccc;
-}
-
 #source-sidebar div.files > a:hover, details.dir-entry summary:hover,
 #source-sidebar div.files > a:focus, details.dir-entry summary:focus {
 	background-color: #444;

src/librustdoc/html/static/css/themes/light.css

@@ -36,9 +36,11 @@
 	--sidebar-current-link-background-color: #fff;
 	--search-result-link-focus-background-color: #ccc;
 	--search-result-border-color: #aaa3;
+	--search-color: #000;
+	--search-results-alias-color: #000;
+	--search-results-grey-color: #999;
 	--stab-background-color: #fff5d6;
 	--stab-code-color: #000;
-	--search-color: #000;
 	--code-highlight-kw-color: #8959a8;
 	--code-highlight-kw-2-color: #4271ae;
 	--code-highlight-lifetime-color: #b76514;
@@ -96,13 +98,6 @@ body.source .example-wrap pre.rust a {
 	color: #888;
 }
 
-.search-results .result-name span.alias {
-	color: #000;
-}
-.search-results .result-name span.grey {
-	color: #999;
-}
-
 #source-sidebar div.files > a:hover, details.dir-entry summary:hover,
 #source-sidebar div.files > a:focus, details.dir-entry summary:focus {
 	background-color: #E0E0E0;