[Bookmarks] Remove side drawer and introduce root folder view

chrome/android/java/res/layout/bookmark_divider.xml

Index: chrome/android/java/res/layout/bookmark_divider.xml
diff --git a/chrome/android/java/res/layout/bookmark_divider.xml b/chrome/android/java/res/layout/bookmark_divider.xml
deleted file mode 100644
index 9c23fe4d4e3e732bec170079e0e0a87488bc60e9..0000000000000000000000000000000000000000
--- a/chrome/android/java/res/layout/bookmark_divider.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright 2015 The Chromium Authors. All rights reserved.
-     Use of this source code is governed by a BSD-style license that can be
-     found in the LICENSE file. -->
-
-<!-- Wrap a framelayout because android list view does not respect margins. -->
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="17dp" >
-
-    <View
-        android:layout_width="match_parent"
-        android:layout_height="1dp"
-        android:layout_gravity="center_vertical"
-        android:background="#ffD6D6D6" />
-
-</FrameLayout>