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

chrome/browser/ui/views/options/simple_content_exceptions_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/simple_content_exceptions_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/utf_string_conversions.h"
@@ skipping 52 matching lines @@
     default:
       NOTREACHED();
   }
 }
 
 void SimpleContentExceptionsView::Layout() {
   views::NativeButton* buttons[] = { remove_button_, remove_all_button_ };
 
   // The buttons are placed in the parent, but we need to lay them out.
   int max_y =
-      GetParent()->GetContentsBounds().bottom() - views::kButtonVEdgeMargin;
+      parent()->GetContentsBounds().bottom() - views::kButtonVEdgeMargin;
   int x = kPanelHorizMargin;
 
   for (size_t i = 0; i < arraysize(buttons); ++i) {
     gfx::Size pref = buttons[i]->GetPreferredSize();
     buttons[i]->SetBounds(x, max_y - pref.height(), pref.width(),
                           pref.height());
     x += pref.width() + kRelatedControlHorizontalSpacing;
   }
 
   // Lay out the rest of this view.
@@ skipping 52 matching lines @@
 
   remove_button_ = new views::NativeButton(
       this,
       UTF16ToWide(l10n_util::GetStringUTF16(IDS_EXCEPTIONS_REMOVE_BUTTON)));
   remove_button_->set_tag(IDS_EXCEPTIONS_REMOVE_BUTTON);
   remove_all_button_ = new views::NativeButton(
       this,
       UTF16ToWide(l10n_util::GetStringUTF16(IDS_EXCEPTIONS_REMOVEALL_BUTTON)));
   remove_all_button_->set_tag(IDS_EXCEPTIONS_REMOVEALL_BUTTON);
 
-  View* parent = GetParent();
-  parent->AddChildView(remove_button_);
-  parent->AddChildView(remove_all_button_);
+  parent()->AddChildView(remove_button_);
+  parent()->AddChildView(remove_all_button_);
 
   GridLayout* layout = new GridLayout(this);
   layout->SetInsets(kExceptionsViewInsetSize, kExceptionsViewInsetSize,
                     kExceptionsViewInsetSize, kExceptionsViewInsetSize);
   SetLayoutManager(layout);
 
   const int single_column_layout_id = 0;
   views::ColumnSet* column_set = layout->AddColumnSet(single_column_layout_id);
   column_set->AddPaddingColumn(0, kRelatedControlHorizontalSpacing);
   column_set->AddColumn(GridLayout::FILL, GridLayout::FILL, 1,
@@ skipping 23 matching lines @@
 
 void SimpleContentExceptionsView::Remove() {
   model_->RemoveRows(GetSelectedRows());
   UpdateButtonState();
 }
 
 void SimpleContentExceptionsView::RemoveAll() {
   model_->RemoveAll();
   UpdateButtonState();
 }