[MD Bookmarks] Add a drag and drop indicator to bookmarks.

chrome/browser/resources/md_bookmarks/folder_node.html

Index: chrome/browser/resources/md_bookmarks/folder_node.html
diff --git a/chrome/browser/resources/md_bookmarks/folder_node.html b/chrome/browser/resources/md_bookmarks/folder_node.html
index 997da21c99d0f0b04cc56d7ab7467f072401e0c7..6b6ac2622029cf036cce13cd72d7d34bbca7a850 100644
--- a/chrome/browser/resources/md_bookmarks/folder_node.html
+++ b/chrome/browser/resources/md_bookmarks/folder_node.html
@@ -36,6 +36,7 @@
             calc(var(--node-depth, 0) * var(--padding-start-per-depth));
         cursor: pointer;
         height: 40px;
+        position: relative;
       }
 
       #folder-label {
@@ -47,7 +48,7 @@
 
       :host([is-selected-folder_]) .menu-label,
       :host([is-selected-folder_]) #folder-label {
-        color: var(--folder-active-color);
+        color: var(--interactive-color);
       }
 
       iron-icon {
@@ -79,7 +80,8 @@
       }
     </style>
 
-    <div id="container" class="v-centered" on-tap="selectFolder_">
+    <div id="container" class="v-centered" on-tap="selectFolder_"
+        draggable="[[!isRootFolder_(depth)]]">
       <template is="dom-if" if="[[hasChildFolder_(item_.children)]]">
         <paper-icon-button id="arrow" icon="cr:arrow-drop-down"
             is-open$="[[!isClosed_]]" on-tap="toggleFolder_">