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

views/controls/menu/menu_item_view_win.cc

 // Copyright (c) 2010 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 <uxtheme.h>
 #include <Vssym32.h>
 
 #include "grit/app_strings.h"
@@ skipping 12 matching lines @@
       font.GetStringWidth(title_) + label_start_ + item_right_margin_ +
           GetChildPreferredWidth(),
       font.GetHeight() + 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 state = render_selection ? MPI_HOT :
                                  (IsEnabled() ? MPI_NORMAL : MPI_DISABLED);
   HDC dc = canvas->BeginPlatformPaint();
   NativeTheme::ControlState control_state;
 
   if (!IsEnabled()) {
     control_state = NativeTheme::CONTROL_DISABLED;
   } else {
     control_state = render_selection ? NativeTheme::CONTROL_HIGHLIGHTED :
                                        NativeTheme::CONTROL_NORMAL;
@@ skipping 118 matching lines @@
   // And the check.
   gfx::Rect icon_bounds(icon_x / 2, icon_y, icon_width, icon_height);
   AdjustBoundsForRTLUI(&icon_bounds);
   RECT icon_rect = icon_bounds.ToRECT();
   NativeTheme::instance()->PaintMenuCheck(
       NativeTheme::MENU, dc, MENU_POPUPCHECK, state_id, &icon_rect,
       control_state);
 }
 
 }  // namespace views