Mark untrusted certificates as such in Linux UI.

chrome/browser/resources/options/certificate_tree.js

Index: chrome/browser/resources/options/certificate_tree.js
diff --git a/chrome/browser/resources/options/certificate_tree.js b/chrome/browser/resources/options/certificate_tree.js
index f8ac854dc3fe2af64b8a6afa29b58255afa8f1ba..2aec9abfce610c08c2a864851f79167a3c67c29b 100644
--- a/chrome/browser/resources/options/certificate_tree.js
+++ b/chrome/browser/resources/options/certificate_tree.js
@@ -24,6 +24,18 @@ cr.define('options', function() {
       treeItem.icon = data.icon;
     }
 
+    if (data.untrusted) {
+      var badge = document.createElement('span')
+      badge.textContent = (new LocalStrings()).getString("badgeUntrusted");

[mattm, 2011/06/29 01:12:07]

localStrings.getString

[agl, 2011/06/29 14:31:11]

Done.

+      badge.style.backgroundColor = 'pink'
+      badge.style.border = '1px solid red'
+      badge.style.borderRadius = '3px'
+      badge.style.marginLeft = '3px'
+      badge.style.paddingLeft = '1px'
+      badge.style.paddingRight = '1px'

[mattm, 2011/06/29 01:12:07]

Create a certificate_tree.css and put the style stuff there, then set the
element's class.  (Include the css from
chrome/browser/resources/options/options.html, next to the
certificate_manager.css one.)

[agl, 2011/06/29 14:31:11]

Done.

+      treeItem.labelElement.appendChild(badge)

[mattm, 2011/06/29 01:12:07]

From a UI perspective I wonder if it would look better with the badge before the
cert name instead of after it?  Or maybe  a red strike-through?  Well, I don't
really want to bikeshed on the UI details, just with a long cert name the
appended badge might require horizontal scrolling to see.

[agl, 2011/06/29 14:31:11]

I agree that there's a danger that a long cert name could push the badge past
the right edge. I've moved the badge to the beginning.

+    }
+
     return treeItem;
   }