[Android] Allow setting recently visited search engines as default search engine

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

Index: chrome/android/java/res/layout/search_engine_divider.xml
diff --git a/chrome/android/java/res/layout/search_engine_divider.xml b/chrome/android/java/res/layout/search_engine_divider.xml
new file mode 100644
index 0000000000000000000000000000000000000000..81b8c3ff94806697d06312b5aa16ab83491d16d4
--- /dev/null
+++ b/chrome/android/java/res/layout/search_engine_divider.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2016 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. -->
+     
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

[Ian Wen, 2016/09/27 04:42:00]

I wouldn't call this file "divider". Instead, how about
search_engine_recent_title

[ltian, 2016/09/28 19:19:46]

Done.

+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:gravity="center_vertical"
+    android:paddingBottom="16dp"
+    android:paddingTop="16dp"
+    android:paddingStart="12dp"
+    android:paddingEnd="6dp">
+
+    <TextView
+      android:text="@string/recently_visited"
+      android:layout_width="match_parent"

[Ian Wen, 2016/09/27 04:42:00]

Indentation not correct. You should install android plugin for your eclipse to
solve this issue.

[ltian, 2016/09/28 19:19:46]

Done.

+      android:layout_height="wrap_content"
+      android:textColor="@color/light_active_color"
+      android:textStyle="bold"
+      android:textSize="15sp"
+      android:gravity="center_vertical"/>
+
+</LinearLayout>