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

chrome/browser/ui/views/options/content_settings_window_view.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/ui/views/options/content_settings_window_view.h"
 
 #include "base/stl_util-inl.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 111 matching lines @@
   label_->SetBounds(kDialogPadding,
                     kDialogPadding,
                     listbox_width,
                     label_->GetPreferredSize().height());
 
   listbox_->SetBounds(kDialogPadding,
                       2 * kDialogPadding + label_->height(),
                       listbox_width,
                       height() - (3 * kDialogPadding) - label_->height());
 
-  if (pages_[current_page_]->GetParent()) {
+  if (pages_[current_page_]->parent()) {
     pages_[current_page_]->SetBounds(
         2 * kDialogPadding + listbox_width,
         2 * kDialogPadding + label_->height(),
         width() - (3 * kDialogPadding) - listbox_width,
         height() - (2 * kDialogPadding));
   }
 }
 
 gfx::Size ContentSettingsWindowView::GetPreferredSize() {
   return gfx::Size(views::Window::GetLocalizedContentsSize(
@@ skipping 46 matching lines @@
   strings.push_back(l10n_util::GetStringUTF16(IDS_PLUGIN_TAB_LABEL));
   strings.push_back(l10n_util::GetStringUTF16(IDS_POPUP_TAB_LABEL));
   strings.push_back(l10n_util::GetStringUTF16(IDS_GEOLOCATION_TAB_LABEL));
   strings.push_back(l10n_util::GetStringUTF16(IDS_NOTIFICATIONS_TAB_LABEL));
   listbox_ = new views::Listbox(strings, this);
   AddChildView(listbox_);
   CHECK_EQ(strings.size(), pages_.size());
 }
 
 void ContentSettingsWindowView::ShowSettingsPage(int page) {
-  if (pages_[current_page_]->GetParent())
+  if (pages_[current_page_]->parent())
     RemoveChildView(pages_[current_page_]);
   current_page_ = page;
   AddChildView(pages_[current_page_]);
   Layout();
   SchedulePaint();
 }
 
 const OptionsPageView*
     ContentSettingsWindowView::GetCurrentContentSettingsTabView() const {
   return static_cast<OptionsPageView*>(pages_[current_page_]);
 }