MD Downloads/History: Fix CSS selector that was mistakenly LTR-only

chrome/browser/resources/md_history/app.vulcanized.html

Index: chrome/browser/resources/md_history/app.vulcanized.html
diff --git a/chrome/browser/resources/md_history/app.vulcanized.html b/chrome/browser/resources/md_history/app.vulcanized.html
index b2acce367411c89080c4b83b8584005917aab363..cc5b8c61f1388c7e987d96e20977a623b14fa086 100644
--- a/chrome/browser/resources/md_history/app.vulcanized.html
+++ b/chrome/browser/resources/md_history/app.vulcanized.html
@@ -2350,9 +2350,8 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
         width: 100%;
       }
 
-      :host-context([dir=ltr]):host([narrow][showing-search]) #icon,
-      :host-context([dir=ltr]):host([narrow][showing-search])
-          paper-spinner-lite {
+      :host([narrow][showing-search]) #icon,
+      :host([narrow][showing-search]) paper-spinner-lite {
         -webkit-margin-start: 18px;
       }
     </style>