Migrate toggle-line-inner background to CSS variable

Author: GuillaumeGomez

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

@@ -2029,6 +2029,11 @@ in storage.js
 .toggle-line-inner {
 	min-width: 2px;
 	height: 100%;
+	background: var(--scrape-example-toggle-line-background);
+}
+
+.toggle-line:hover .toggle-line-inner {
+	background: var(--scrape-example-toggle-line-hover-background);
 }
 
 .more-scraped-examples .scraped-example, .example-links {

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

@@ -90,6 +90,8 @@ Original by Dempfi (https://github.com/dempfi/ayu)
 	--source-sidebar-background-hover: #14191f;
 	--table-alt-row-background-color: #191f26;
 	--codeblock-link-background: #333;
+	--scrape-example-toggle-line-background: #999;
+	--scrape-example-toggle-line-hover-background: #c5c5c5;
 }
 
 h1, h2, h3, h4 {
@@ -221,9 +223,3 @@ pre.rust .kw-2, pre.rust .prelude-ty {}
 .scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(15, 20, 25, 1), rgba(15, 20, 25, 0));
 }
-.toggle-line-inner {
-	background: #999;
-}
-.toggle-line:hover .toggle-line-inner {
-	background: #c5c5c5;
-}

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

@@ -85,6 +85,8 @@
 	--source-sidebar-background-hover: #444;
 	--table-alt-row-background-color: #2A2A2A;
 	--codeblock-link-background: #333;
+	--scrape-example-toggle-line-background: #999;
+	--scrape-example-toggle-line-hover-background: #c5c5c5;
 }
 
 #titles > button:not(.selected) {
@@ -117,9 +119,3 @@
 .scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(53, 53, 53, 1), rgba(53, 53, 53, 0));
 }
-.toggle-line-inner {
-	background: #999;
-}
-.toggle-line:hover .toggle-line-inner {
-	background: #c5c5c5;
-}

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

@@ -82,6 +82,8 @@
 	--source-sidebar-background-hover: #e0e0e0;
 	--table-alt-row-background-color: #F5F5F5;
 	--codeblock-link-background: #eee;
+	--scrape-example-toggle-line-background: #ccc;
+	--scrape-example-toggle-line-hover-background: #999;
 }
 
 #titles > button:not(.selected) {
@@ -114,9 +116,3 @@
 .scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
 }
-.toggle-line-inner {
-	background: #ccc;
-}
-.toggle-line:hover .toggle-line-inner {
-	background: #999;
-}