Rework tree APIs to reflect Google style and more const-correctness....

views/controls/menu/menu_item_view_gtk.cc

 // Copyright (c) 2009 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.
 
 #include "views/controls/menu/menu_item_view.h"
 
 #include "base/utf_string_conversions.h"
 #include "grit/app_resources.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
 #include "ui/base/resource/resource_bundle.h"
@@ skipping 23 matching lines @@
       font.GetStringWidth(title_) + label_start_ +
           item_right_margin_ + GetChildPreferredWidth(),
       content_height + GetBottomMargin() + GetTopMargin());
 }
 
 void MenuItemView::Paint(gfx::Canvas* canvas, bool for_drag) {
   const MenuConfig& config = MenuConfig::instance();
   bool render_selection =
       (!for_drag && IsSelected() &&
        parent_menu_item_->GetSubmenu()->GetShowSelection(this) &&
-       GetChildViewCount() == 0);
+       !has_children());
 
   int icon_x = config.item_left_margin;
   int top_margin = GetTopMargin();
   int bottom_margin = GetBottomMargin();
   int icon_y = top_margin + (height() - config.item_top_margin -
                              bottom_margin - config.check_height) / 2;
   int icon_height = config.check_height;
   int available_height = height() - top_margin - bottom_margin;
 
   // Render the background. As MenuScrollViewContainer draws the background, we
@@ skipping 62 matching lines @@
                                          config.arrow_width) / 2,
                            config.arrow_width, height());
     AdjustBoundsForRTLUI(&arrow_bounds);
     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
     canvas->DrawBitmapInt(*rb.GetBitmapNamed(IDR_MENU_ARROW),
                           arrow_bounds.x(), arrow_bounds.y());
   }
 }
 
 }  // namespace views