MD Bookmarks: Show toolbar overlay when multiple items are selected

chrome/browser/resources/md_bookmarks/list.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_action_menu/cr_action_menu.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_lazy_render/cr_lazy_render.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/shadow.html">
 <link rel="import" href="chrome://bookmarks/edit_dialog.html">
 <link rel="import" href="chrome://bookmarks/item.html">
 <link rel="import" href="chrome://bookmarks/shared_style.html">
 <link rel="import" href="chrome://bookmarks/store_client.html">
 <link rel="import" href="chrome://bookmarks/util.html">
 
 <dom-module id="bookmarks-list">
   <template>
     <style include="shared-style">
       :host {
         overflow-y: auto;
-        padding: 20px 32px 20px calc(32px - var(--splitter-width));
+        padding: 20px var(--card-padding-side) 20px
+            calc(var(--card-padding-side) - var(--splitter-width));
       }
 
       #bookmarksCard {
         @apply(--shadow-elevation-2dp);
         background-color: #fff;
         margin: 0 auto;
         max-width: var(--card-max-width);
         padding: 8px 0;
       }
 
@@ skipping 28 matching lines @@
     <div id="message" class="centered-message"
         hidden$="[[!isEmptyList_(displayedList_.length)]]">
       [[emptyListMessage_(searchTerm_)]]
     </div>
     <template is="cr-lazy-render" id="editDialog">
       <bookmarks-edit-dialog></bookmarks-edit-dialog>
     </template>
   </template>
   <script src="chrome://bookmarks/list.js"></script>
 </dom-module>