Settings: shared css: add .settings-box.single-column

chrome/browser/resources/settings/settings_shared_css.html

Index: chrome/browser/resources/settings/settings_shared_css.html
diff --git a/chrome/browser/resources/settings/settings_shared_css.html b/chrome/browser/resources/settings/settings_shared_css.html
index cf4a05f7318708337d13bf09ba2b4aac6a7e6375..29de8f364c5149ac682a5e91e1db56fdbac8f39a 100644
--- a/chrome/browser/resources/settings/settings_shared_css.html
+++ b/chrome/browser/resources/settings/settings_shared_css.html
@@ -280,6 +280,16 @@
         min-height: 56px;
       }
 
+      /*
+       * A settings box with a single start-aligned column, generally but not
+       * necessarily used in combination with two-line.

[Dan Beam, 2016/07/22 23:18:42]

nit: I know you're just kind of following the comment above, but

/* A settings box with a single start-aligned column, generally but not
 * necessarily used in combination with two-line. */

is more compact and common in CSS across webui

[stevenjb, 2016/07/22 23:44:42]

Acknowledged.

+       */
+      .settings-box.single-column {
+        align-items: flex-start;
+        flex-direction: column;
+        justify-content: center;
+      }
+
       /* The lower line of text in a .settings-box.two-line. */
       .settings-box .secondary {
         @apply(--settings-secondary);