Add a way to have three icon menu item

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

Index: chrome/android/java/res/layout/three_button_menu_item.xml
diff --git a/chrome/android/java/res/layout/four_button_menu_item.xml b/chrome/android/java/res/layout/three_button_menu_item.xml
similarity index 78%
copy from chrome/android/java/res/layout/four_button_menu_item.xml
copy to chrome/android/java/res/layout/three_button_menu_item.xml
index bbec6abb5e1732c95e6ccddfe7b0b47011f430c4..6ec9040f3f7f8d317a9869baaca837efbb19f977 100644
--- a/chrome/android/java/res/layout/four_button_menu_item.xml
+++ b/chrome/android/java/res/layout/three_button_menu_item.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright 2014 The Chromium Authors. All rights reserved.
+<!-- 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.
@@ -33,12 +33,4 @@
         android:layout_weight="1"
         android:background="?attr/listChoiceBackgroundIndicator"
         android:scaleType="center" />
-
-    <org.chromium.chrome.browser.widget.TintedImageButton
-        android:id="@+id/button_four"
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_weight="1"
-        android:background="?attr/listChoiceBackgroundIndicator"
-        android:scaleType="center" />
 </LinearLayout>