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

chrome/browser/ui/views/extensions/extension_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/extensions/extension_view.h"
 
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/ui/views/extensions/extension_popup.h"
@@ skipping 15 matching lines @@
       is_clipped_(false) {
   host_->set_view(this);
 
   // This view needs to be focusable so it can act as the focused view for the
   // focus manager. This is required to have SkipDefaultKeyEventProcessing
   // called so the tab key events are forwarded to the renderer.
   SetFocusable(true);
 }
 
 ExtensionView::~ExtensionView() {
-  View* parent = GetParent();
-  if (parent)
-    parent->RemoveChildView(this);
+  if (parent())
+    parent()->RemoveChildView(this);
   CleanUp();
 }
 
 const Extension* ExtensionView::extension() const {
   return host_->extension();
 }
 
 RenderViewHost* ExtensionView::render_view_host() const {
   return host_->render_view_host();
 }
@@ skipping 147 matching lines @@
     render_view_host()->view()->SetBackground(pending_background_);
     pending_background_.reset();
   }
 
   // Tell the renderer not to draw scroll bars in popups unless the
   // popups are at the maximum allowed size.
   gfx::Size largest_popup_size(ExtensionPopup::kMaxWidth,
                                ExtensionPopup::kMaxHeight);
   host_->DisableScrollbarsForSmallWindows(largest_popup_size);
 }