MD Settings: Fix cookie exceptions flex layout regression.

chrome/browser/resources/settings/site_settings/site_list.html

Index: chrome/browser/resources/settings/site_settings/site_list.html
diff --git a/chrome/browser/resources/settings/site_settings/site_list.html b/chrome/browser/resources/settings/site_settings/site_list.html
index 05643257199466bfedc020ba614f8ef62c965048..d962b62fbf27cc69179a5d7b928353063f99548b 100644
--- a/chrome/browser/resources/settings/site_settings/site_list.html
+++ b/chrome/browser/resources/settings/site_settings/site_list.html
@@ -3,6 +3,7 @@
 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_indicator.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
+<link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout-classes.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="../i18n_setup.html">
@@ -17,7 +18,7 @@
 
 <dom-module id="site-list">
   <template>
-    <style include="settings-shared">
+    <style include="settings-shared iron-flex">
       .selectable {
         -webkit-user-select: text;
       }