chrome/browser/resources/md_bookmarks/app.html

<link rel="import" href="chrome://resources/html/polymer.html">
<link rel="import" href="chrome://resources/html/cr/ui/splitter.html">
<link rel="import" href="chrome://bookmarks/api_listener.html">
<link rel="import" href="chrome://bookmarks/command_manager.html">
<link rel="import" href="chrome://bookmarks/constants.html">
<link rel="import" href="chrome://bookmarks/dnd_manager.html">
<link rel="import" href="chrome://bookmarks/list.html">
<link rel="import" href="chrome://bookmarks/router.html">
<link rel="import" href="chrome://bookmarks/shared_vars.html">
<link rel="import" href="chrome://bookmarks/store.html">
<link rel="import" href="chrome://bookmarks/toolbar.html">
<link rel="import" href="chrome://bookmarks/folder_node.html">
<link rel="import" href="chrome://bookmarks/util.html">

<dom-module id="bookmarks-app">
  <template>
    <style>
      :host {
        color: var(--primary-text-color);
        display: flex;
        flex-direction: column;
        height: 100%;
        line-height: 154%;  /* 20px. */
      }

      #main-container {
        display: flex;
        flex-direction: row;
        flex-grow: 1;
        overflow: auto;
      }

      #splitter {
        cursor: e-resize;
        flex: 0 0 var(--splitter-width);
      }

      :host-context([dir='rtl']) #splitter {
        cursor: w-resize;
      }

      #sidebar {
        -webkit-padding-start: 3px;
        display: block;
        max-width: 40%;
        min-width: var(--min-sidebar-width);
        overflow-x: hidden;
        overflow-y: auto;
        padding-top: 8px;
        user-select: none;
        width: var(--min-sidebar-width);
      }

      bookmarks-list {
        flex: 1;
        min-width: 550px;
      }
    </style>
    <bookmarks-toolbar sidebar-width="[[sidebarWidth_]]"></bookmarks-toolbar>
    <div id="main-container">
       <div id="sidebar">
        <bookmarks-folder-node item-id="0" depth="-1"></bookmarks-folder-node>
      </div>
      <div id="splitter"></div>
      <bookmarks-list></bookmarks-list>
    </div>
    <bookmarks-router></bookmarks-router>
    <bookmarks-command-manager></bookmarks-command-manager>
  </template>
  <script src="chrome://bookmarks/app.js"></script>
</dom-module>