[List UI Unification] Basic list unification for phones

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

 <?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. -->
 
 <ViewSwitcher xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/bookmark_view_switcher"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:inAnimation="@android:anim/fade_in"
     android:outAnimation="@android:anim/fade_out" >
 
     <android.support.v4.widget.DrawerLayout
         android:id="@+id/bookmark_drawer_layout"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:background="@android:color/white" >
+        android:layout_height="match_parent" >
 
         <org.chromium.chrome.browser.widget.selection.SelectableListLayout
             android:id="@+id/selectable_list"
             android:layout_width="match_parent"
-            android:layout_height="match_parent" />
+            android:layout_height="match_parent"
+            android:background="@color/default_primary_color" />
 
         <org.chromium.chrome.browser.bookmarks.BookmarkDrawerListView
             android:id="@+id/bookmark_drawer_list"
             android:layout_width="@dimen/drawer_width"
             android:layout_height="match_parent"
             android:layout_gravity="start"
             android:background="@android:color/white"
             android:choiceMode="singleChoice"
             android:divider="@null"
             android:dividerHeight="0dp" />
     </android.support.v4.widget.DrawerLayout>
 
     <include layout="@layout/bookmark_search"/>
 
 </ViewSwitcher>