Remove the menu button from the menu popup.

chrome/android/java/src/org/chromium/chrome/browser/appmenu/AppMenu.java

 // Copyright 2011 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.
 
 package org.chromium.chrome.browser.appmenu;
 
 import android.animation.Animator;
 import android.animation.AnimatorSet;
 import android.content.Context;
 import android.content.res.Resources;
@@ skipping 20 matching lines @@
 import java.util.ArrayList;
 import java.util.List;
 
 /**
  * Shows a popup of menuitems anchored to a host view. When a item is selected we call
  * Activity.onOptionsItemSelected with the appropriate MenuItem.
  *   - Only visible MenuItems are shown.
  *   - Disabled items are grayed out.
  */
 public class AppMenu implements OnItemClickListener, OnKeyListener {
-    /** Whether or not to show the software menu button in the menu. */
-    private static final boolean SHOW_SW_MENU_BUTTON = true;
 
     private static final float LAST_ITEM_SHOW_FRACTION = 0.5f;
 
     private final Menu mMenu;
     private final int mItemRowHeight;
     private final int mItemDividerHeight;
     private final int mVerticalFadeDistance;
     private final int mNegativeSoftwareVerticalOffset;
     private ListPopupWindow mPopup;
     private AppMenuAdapter mAdapter;
@@ skipping 94 matching lines @@
         }
 
         Rect sizingPadding = new Rect(bgPadding);
         if (isByHardwareButton && originalBgDrawable != null) {
             Rect originalPadding = new Rect();
             originalBgDrawable.getPadding(originalPadding);
             sizingPadding.top = originalPadding.top;
             sizingPadding.bottom = originalPadding.bottom;
         }
 
-        boolean showMenuButton = !mIsByHardwareButton;
-        if (!SHOW_SW_MENU_BUTTON) showMenuButton = false;
         // A List adapter for visible items in the Menu. The first row is added as a header to the
         // list view.
         mAdapter = new AppMenuAdapter(
                 this, menuItems, LayoutInflater.from(context),
-                showMenuButton, menuButtonStartPaddingPx);
+                false, menuButtonStartPaddingPx);
         mPopup.setAdapter(mAdapter);
 
         setMenuHeight(menuItems.size(), visibleDisplayFrame, screenHeight, sizingPadding);
         setPopupOffset(mPopup, mCurrentScreenRotation, visibleDisplayFrame, sizingPadding);
         mPopup.setOnItemClickListener(this);
         mPopup.show();
         mPopup.getListView().setItemsCanFocus(true);
         mPopup.getListView().setOnKeyListener(this);
 
         mHandler.onMenuVisibilityChanged(true);
@@ skipping 165 matching lines @@
                     builder = animation.play((Animator) animatorObject);
                 } else {
                     builder.with((Animator) animatorObject);
                 }
             }
         }
 
         animation.start();
     }
 }