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

views/widget/drop_helper.cc

 // Copyright (c) 2006-2008 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 "views/widget/drop_helper.h"
 
 #include "ui/base/dragdrop/drag_drop_types.h"
 #include "views/view.h"
 #include "views/widget/root_view.h"
 
@@ skipping 78 matching lines @@
     *deepest_view = view;
   // TODO(sky): for the time being these are separate. Once I port chrome menu
   // I can switch to the #else implementation and nuke the OS_WIN
   // implementation.
 #if defined(OS_WIN)
   // View under mouse changed, which means a new view may want the drop.
   // Walk the tree, stopping at target_view_ as we know it'll accept the
   // drop.
   while (view && view != target_view_ &&
          (!view->IsEnabled() || !view->CanDrop(data))) {
-    view = view->GetParent();
+    view = view->parent();
   }
 #else
   int formats = 0;
   std::set<OSExchangeData::CustomFormat> custom_formats;
   while (view && view != target_view_) {
     if (view->IsEnabled() &&
         view->GetDropFormats(&formats, &custom_formats) &&
         data.HasAnyFormat(formats, custom_formats) &&
         (!check_can_drop || view->CanDrop(data))) {
       // Found the view.
       return view;
     }
     formats = 0;
     custom_formats.clear();
-    view = view->GetParent();
+    view = view->parent();
   }
 #endif
   return view;
 }
 
 void DropHelper::NotifyDragEntered(const OSExchangeData& data,
                                    const gfx::Point& root_view_location,
                                    int drag_operation) {
   if (!target_view_)
     return;
@@ skipping 21 matching lines @@
                               drag_operation);
   return target_view_->OnDragUpdated(enter_event);
 }
 
 void DropHelper::NotifyDragExit() {
   if (target_view_)
     target_view_->OnDragExited();
 }
 
 }  // namespace views