Update menu look and feel on Android

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

Index: chrome/android/java/res/layout/four_button_menu_item.xml
diff --git a/chrome/android/java/res/layout/four_button_menu_item.xml b/chrome/android/java/res/layout/four_button_menu_item.xml
index 1e47144771d799245711f28e894a50aec9315798..d0296f62b6f40de8b76bb833fc3c741848fa769a 100644
--- a/chrome/android/java/res/layout/four_button_menu_item.xml
+++ b/chrome/android/java/res/layout/four_button_menu_item.xml
@@ -6,54 +6,41 @@
 -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content"
+    android:layout_height="?android:attr/listPreferredItemHeightSmall"
     android:layout_gravity="top|start"
     android:orientation="horizontal">
 
     <ImageButton
         android:id="@+id/button_one"
-        android:layout_width="wrap_content"
+        android:layout_width="56dp"
         android:layout_height="match_parent"
-        android:layout_weight="1"
+        android:paddingEnd="8dp"
         android:background="?android:attr/listChoiceBackgroundIndicator"
         android:scaleType="center" />
 
-    <View
-        android:layout_width="1dp"
-        android:layout_height="?android:attr/listPreferredItemHeightSmall"
-        android:background="?android:attr/listDivider" />
-
     <ImageButton
         android:id="@+id/button_two"
-        android:layout_width="wrap_content"
+        android:layout_width="64dp"
         android:layout_height="match_parent"
-        android:layout_weight="1"
+        android:paddingStart="8dp"
+        android:paddingEnd="8dp"
         android:background="?android:attr/listChoiceBackgroundIndicator"
         android:scaleType="center" />
 
-    <View
-        android:layout_width="1dp"
-        android:layout_height="?android:attr/listPreferredItemHeightSmall"
-        android:background="?android:attr/listDivider" />
-
     <ImageButton
         android:id="@+id/button_three"
-        android:layout_width="wrap_content"
+        android:layout_width="64dp"
         android:layout_height="match_parent"
-        android:layout_weight="1"
+        android:paddingStart="8dp"
+        android:paddingEnd="8dp"
         android:background="?android:attr/listChoiceBackgroundIndicator"
         android:scaleType="center" />
-    
-    <View
-        android:layout_width="1dp"
-        android:layout_height="?android:attr/listPreferredItemHeightSmall"
-        android:background="?android:attr/listDivider" />
 
     <ImageButton
         android:id="@+id/button_four"
-        android:layout_width="wrap_content"
+        android:layout_width="56dp"
         android:layout_height="match_parent"
-        android:layout_weight="1"
+        android:paddingStart="8dp"
         android:background="?android:attr/listChoiceBackgroundIndicator"
         android:scaleType="center" />