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

chrome/browser/ui/views/options/advanced_contents_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/advanced_contents_view.h"
 
 #include <windows.h>
 
 #include <cryptuiapi.h>
 #pragma comment(lib, "cryptui.lib")
@@ skipping 1455 matching lines @@
           IDS_OPTIONS_CLOUD_PRINT_PROXY_DISABLED_BUTTON)));
       enable_disable_button_->InvalidateLayout();
       enable_disable_button_->SetEnabled(cloud_print_proxy_allowed);
       manage_printer_button_->SetVisible(false);
     }
 
     // Find the parent ScrollView, and ask it to re-layout since it's
     // possible that the section_description_label_ has changed
     // heights.  And scroll us back to being visible in that case, to
     // be nice to the user.
-    views::View* view = section_description_label_->GetParent();
+    views::View* view = section_description_label_->parent();
     while (view && view->GetClassName() != views::ScrollView::kViewClassName)
-      view = view->GetParent();
+      view = view->parent();
     if (view) {
       gfx::Rect visible_bounds = GetVisibleBounds();
       bool was_all_visible = (visible_bounds.size() == size());
       // Our bounds can change across this call, so we have to use the
       // new bounds if we want to stay completely visible.
       view->Layout();
       ScrollRectToVisible(was_all_visible ? bounds() : visible_bounds);
     } else {
       Layout();
     }
@@ skipping 52 matching lines @@
     views::ScrollView* scroll_view,
     bool is_horizontal,
     bool is_positive) {
 
   if (!is_horizontal)
     return line_height_;
   return View::GetPageScrollIncrement(scroll_view, is_horizontal, is_positive);
 }
 
 void AdvancedContentsView::Layout() {
-  views::View* parent = GetParent();
-  if (parent && parent->width()) {
-    const int width = parent->width();
+  if (parent() && parent()->width()) {
+    const int width = parent()->width();
     const int height = GetHeightForWidth(width);
     SetBounds(0, 0, width, height);
   } else {
     gfx::Size prefsize = GetPreferredSize();
     SetBounds(0, 0, prefsize.width(), prefsize.height());
   }
   View::Layout();
 }
 
 void AdvancedContentsView::OnBoundsChanged() {
@@ skipping 72 matching lines @@
 // AdvancedScrollViewContainer, views::View overrides:
 
 void AdvancedScrollViewContainer::Layout() {
   gfx::Rect lb = GetLocalBounds();
 
   gfx::Size border = gfx::NativeTheme::instance()->GetThemeBorderSize(
       gfx::NativeTheme::LIST);
   lb.Inset(border.width(), border.height());
   scroll_view_->SetBoundsRect(lb);
 }