[Media Router WebUI] Remove cosmetic styling on focused "Share your screen" subheading.

chrome/browser/resources/media_router/elements/media_router_container/media_router_container.css

Index: chrome/browser/resources/media_router/elements/media_router_container/media_router_container.css
diff --git a/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.css b/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.css
index a680b391fea33c51f07700607c9065f42a0bbdf1..ffc6c8a51f70f8f4afd0123bf55b922f224d665c 100644
--- a/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.css
+++ b/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.css
@@ -152,10 +152,16 @@ paper-menu {
 #share-screen-text {
   -webkit-padding-start: var(--dialog-padding-start);
   color: var(--subtext-color);
+  font-weight: normal;
   padding-bottom: 4px;
   padding-top: 12px;
 }
 
+#share-screen-text::after {
+  background-color: white;
+  font-weight: normal;
+}
+
 .sink-content {
   display: flex;
   flex-direction: row;