MD User Manager: Hover and Focus states for the custodian accounts dropdown

chrome/browser/resources/md_user_manager/create_profile.html

Index: chrome/browser/resources/md_user_manager/create_profile.html
diff --git a/chrome/browser/resources/md_user_manager/create_profile.html b/chrome/browser/resources/md_user_manager/create_profile.html
index efe64cbd19ccf35ac70085493f0b514e575819eb..5f6c786630f14545b506ba45590f3953499f801e 100644
--- a/chrome/browser/resources/md_user_manager/create_profile.html
+++ b/chrome/browser/resources/md_user_manager/create_profile.html
@@ -126,8 +126,18 @@
         --paper-item-selected: {
           font-weight: normal;
         };
+        --paper-item-focused: {
+          background: rgba(0, 0, 0, .12);
+        };
+        --paper-item-focused-before: {
+          background: none;
+        };
       }
 
+      #supervised-user-container paper-listbox paper-item:hover {
+        background: rgba(0, 0, 0, .12);
+      };
+
       #supervised-user-container #import-user {
         -webkit-margin-start: 16px;
       }