MD Downloads: change :focus effect to underline so it doesn't look like :hover

chrome/browser/resources/md_downloads/toolbar.css

Index: chrome/browser/resources/md_downloads/toolbar.css
diff --git a/chrome/browser/resources/md_downloads/toolbar.css b/chrome/browser/resources/md_downloads/toolbar.css
index bb27d9fbc5045e8219a422a3040738d3fe09c35b..0c91d75249b0eddeafd5980027457ba4b3b03406 100644
--- a/chrome/browser/resources/md_downloads/toolbar.css
+++ b/chrome/browser/resources/md_downloads/toolbar.css
@@ -83,7 +83,16 @@ paper-icon-button {
   -webkit-margin-start: 16px;
 }
 
+:host {
+  /* Applies to <paper-item>, hell if I know why it has to be here. */

[groby-ooo-7-16, 2016/07/19 17:44:39]

That doesn't scare me at all. Nu-uh.

+  --dark-divider-opacity: 0;
+}
+
 paper-item {
+  --paper-item-focused: {
+    background: none;
+    text-decoration: underline;
+  };
   -webkit-user-select: none;
   cursor: pointer;
   font: inherit;