Download home : Added info menu icon

chrome/android/java/res/menu/download_manager_menu.xml

 <?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. -->
 
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:chrome="http://schemas.android.com/apk/res-auto" >
 
     <group android:id="@+id/normal_menu_group" >
         <item
+            android:id="@+id/info_menu_id"
+            android:icon="@drawable/btn_info"
+            android:title="@string/info"

[Theresa, 2017/05/09 23:32:23]

The title is used as fallback when there's not room to display the action. and
as the content description for talk back. We should have a more descriptive
title, e.g. "Show size display" and "Hide size display". srahim@ is our UX
string writer, so she can probably advise.

[Theresa, 2017/05/10 00:05:44]

Another potential is "Show info" and "Hide info", which could be shared with
history.

[shaktisahu, 2017/05/11 19:55:47]

While waiting on an updated string request, I have added Show info / Hide info
for now.  

+            android:visible="false"
+            chrome:showAsAction="ifRoom" />
+        <item
             android:id="@+id/search_menu_id"
             android:icon="@drawable/ic_search"
             android:title="@string/search"
             android:visible="false"
             chrome:showAsAction="ifRoom" />
         <item
             android:id="@+id/close_menu_id"
             android:icon="@drawable/btn_close"
             android:title="@string/close"
             chrome:showAsAction="ifRoom" />
      </group>
      <group
         android:id="@+id/selection_mode_menu_group"
         android:visible="false" >
         <item
             android:id="@+id/selection_mode_share_menu_id"
             android:icon="@drawable/ic_share_white_24dp"
             android:title="@string/share"
             chrome:showAsAction="ifRoom" />
         <item
             android:id="@+id/selection_mode_delete_menu_id"
             android:icon="@drawable/ic_delete_white_24dp"
             android:title="@string/delete"
             chrome:showAsAction="ifRoom" />
      </group>
 </menu>