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

chrome/browser/ui/views/location_bar/page_action_image_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/location_bar/page_action_image_view.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/extensions/extension_browser_event_router.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 166 matching lines @@
   if (image) {
     if (index < static_cast<int>(page_action_->icon_paths()->size()))
       page_action_icons_[page_action_->icon_paths()->at(index)] = *image;
     else
       page_action_icons_[page_action_->default_icon_path()] = *image;
   }
 
   // During object construction (before the parent has been set) we are already
   // in a UpdatePageActions call, so we don't need to start another one (and
   // doing so causes crash described in http://crbug.com/57333).
-  if (GetParent())
+  if (parent())
     owner_->UpdatePageActions();
 }
 
 void PageActionImageView::UpdateVisibility(TabContents* contents,
                                            const GURL& url) {
   // Save this off so we can pass it back to the extension when the action gets
   // executed. See PageActionImageView::OnMousePressed.
   current_tab_id_ = contents ? ExtensionTabUtil::GetTabId(contents) : -1;
   current_url_ = url;
 
@@ skipping 43 matching lines @@
 void PageActionImageView::ExtensionPopupIsClosing(ExtensionPopup* popup) {
   DCHECK_EQ(popup_, popup);
   // ExtensionPopup is ref-counted, so we don't need to delete it.
   popup_ = NULL;
 }
 
 void PageActionImageView::HidePopup() {
   if (popup_)
     popup_->Close();
 }