Better support for patterns.

chrome/browser/resources/settings/site_settings/site_settings_behavior.js

Index: chrome/browser/resources/settings/site_settings/site_settings_behavior.js
diff --git a/chrome/browser/resources/settings/site_settings/site_settings_behavior.js b/chrome/browser/resources/settings/site_settings/site_settings_behavior.js
index 31310a6701ec141149b9e01dd3d19ae52b27bb97..5815450035f42b6b6ab4a5d0fcf8a230d8d41d11 100644
--- a/chrome/browser/resources/settings/site_settings/site_settings_behavior.js
+++ b/chrome/browser/resources/settings/site_settings/site_settings_behavior.js
@@ -284,6 +284,16 @@ var SiteSettingsBehaviorImpl = {
         return '';
     }
   },
+
+  /**
+   * Ensures the URL has a scheme (assumes http if omitted).
+   * @param {string} url The URL with or without a scheme.
+   * @return {string} The URL with a scheme.

[michaelpg, 2016/04/11 03:55:35]

... or the empty string

[Finnur, 2016/04/11 11:45:33]

Done.

+   */
+  ensureUrlHasScheme: function(url) {
+    if (url.length == 0) return url;
+    return url.indexOf('://') != -1 ? url : 'http://' + url;

[michaelpg, 2016/04/11 03:55:35]

url.includes

[Finnur, 2016/04/11 11:45:33]

Done.

+  },
 };
 
 /** @polymerBehavior */