[MD Bookmarks] Implement adding folders and bookmarks from toolbar menu.

chrome/browser/resources/md_bookmarks/toolbar.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_dialog/cr_dialog.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_toolbar/cr_toolbar.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
 <link rel="import" href="chrome://bookmarks/shared_style.html">
 <link rel="stylesheet" href="chrome://resources/css/md_colors.css">
 
 <dom-module id="bookmarks-toolbar">
   <template>
-    <style include="shared-style">
+    <style include="shared-style cr-shared-style">
       button.more-actions {
         margin: 4px;
       }
 
       button.more-vert-button div {
         border-color: white;
       }
 
       cr-toolbar {
         --cr-toolbar-field-margin: var(--sidebar-width);
@@ skipping 15 matching lines @@
         $i18n{menuAddFolder}
       </button>
       <hr>
       <button class="dropdown-item" on-tap="onImportTap_">
         $i18n{menuImport}
       </button>
       <button class="dropdown-item" on-tap="onExportTap_">
         $i18n{menuExport}
       </button>
     </dialog>
+    <dialog is="cr-dialog" id="addBookmark">
+      <div class="title">[[getModalTitle_(createdNode)]]</div>
+      <div class="body">
+        <paper-input always-float-label id="name"
+            label="$i18n{editDialogNameInput}"
+            value="{{createdNode.title}}">
+        </paper-input>
+        <paper-input always-float-label id="url"
+            hidden$="[[createdNode.isFolder]]"
+            label="$i18n{editDialogUrlInput}"
+            value="{{createdNode.url}}">
+        </paper-input>
+      </div>
+      <div class="button-container">
+        <paper-button class="cancel-button" on-tap="onCancelAddTap_">
+          $i18n{cancelEdit}
+        </paper-button>
+        <paper-button class="action-button" on-tap="onSaveAddTap_">
+          $i18n{saveEdit}
+        </paper-button>
+      </div>
+    </dialog>
     <cr-toolbar page-name="$i18n{title}"
         clear-label="$i18n{clearSearch}"
         search-prompt="$i18n{searchPrompt}"
         on-search-changed="onSearchChanged_">
       <button is="paper-icon-button-light" class="more-actions more-vert-button"
           on-tap="onMenuButtonOpenTap_">
         <div></div>
         <div></div>
         <div></div>
       </button>
     </cr-toolbar>
   </template>
   <script src="chrome://bookmarks/toolbar.js"></script>
 </dom-module>