[MD settings] change button padding and placement

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 001f436da70d99c2c4a73ae16f70296689bf276e..9559a07376634a5823bf85d24d027d56b4a63e09 100644
--- a/chrome/browser/resources/settings/settings_shared_css.html
+++ b/chrome/browser/resources/settings/settings_shared_css.html
@@ -59,7 +59,11 @@
       }
 
       paper-button {
+        @apply(--layout-center);
+        display: flex;
         margin: 0;
+        min-height: 32px;
+        padding: 0 12px;
       }
 
       paper-button[toggles][active] {
@@ -90,7 +94,6 @@
           font-weight: 500;
           text-align: start;
         };
-        margin: 0 -0.57em;  /* Offsets default paper-button padding. */
       }
 
       paper-button.secondary-button {
@@ -136,11 +139,6 @@
         white-space: nowrap;
       }
 
-      .button-row {
-        display: flex;
-        margin-top: 25px;
-      }
-
       .button-strip {
         text-align: end;
       }
@@ -224,6 +222,15 @@
         padding: 0 20px;
       }
 
+      /* The button-strip inside of a settings-box is moved over a small amount
+       * to line up the text of the button label with the 20px settings-box
+       * margin. See also: .secondary-action for buttons at the end of the row.
+       */
+      .settings-box.button-strip {
+        /* Plus 12px for the button equals 20px total. */
+        -webkit-padding-start: 8px;
+      }
+
       .settings-box.first,
       .settings-box.continuation {
         border-top: none;
@@ -261,10 +268,17 @@
        *  +-------------------------------------------------------+
        *  | Another setting-box without a secondary-action        |
        *  +-------------------------------------------------------+
+       *
+       * See also: .button-strip for buttons at the start of the row.
        */
       .settings-box .secondary-action {
+        @apply(--layout-center);
         -webkit-border-start: var(--settings-separator-line);
-        -webkit-padding-start: 20px;
+        -webkit-padding-start: 8px;
+        display: flex;
+        left: 12px;  /* Equal to the paper-button padding. */

[Dan Beam, 2016/05/18 00:32:47]

wont work in RTL

[dschuyler, 2016/05/18 20:29:04]

Done.

+        min-height: 32px;
+        position: relative;
       }
 
       .settings-box paper-item iron-icon {