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

chrome/browser/resources/md_bookmarks/toolbar.js

Index: chrome/browser/resources/md_bookmarks/toolbar.js
diff --git a/chrome/browser/resources/md_bookmarks/toolbar.js b/chrome/browser/resources/md_bookmarks/toolbar.js
index 53f002b1be97266b99a0c2b896313ee45b403922..6bc6e15b10c1d8b92ea06adf5ab8dea82e670c36 100644
--- a/chrome/browser/resources/md_bookmarks/toolbar.js
+++ b/chrome/browser/resources/md_bookmarks/toolbar.js
@@ -10,6 +10,8 @@ Polymer({
       type: String,
       observer: 'onSearchTermChanged_',
     },
+
+    createdNode: Object,
   },
 
   /** @return {CrToolbarSearchFieldElement} */
@@ -39,6 +41,14 @@ Polymer({
 
   /** @private */
   onAddBookmarkTap_: function() {
+    this.createdNode = {isFolder: false};
+    this.$.addBookmark.showModal();
+    this.closeDropdownMenu_();
+  },
+
+  onAddFolderTap_: function() {
+    this.createdNode = {isFolder: true};
+    this.$.addBookmark.showModal();
     this.closeDropdownMenu_();
   },
 
@@ -58,6 +68,25 @@ Polymer({
     menu.close();
   },
 
+  /** @private */
+  onSaveAddTap_: function() {
+    delete this.createdNode['isFolder'];
+    this.fire('node-added', this.createdNode);
+    this.$.addBookmark.close();
+  },
+
+  /** @private */
+  onCancelAddTap_: function() {
+    this.$.addBookmark.close();
+  },
+
+  /** @private */
+  getModalTitle_: function() {
+    var title =
+        this.createdNode.isFolder ? 'addFolderTitle' : 'addBookmarkTitle';
+    return loadTimeData.getString(title);
+  },
+
   /**
    * @param {Event} e
    * @private