Contributed by Eriq Augustine <eriq.augustine@gmail.com>

chrome/browser/extensions/extension_context_menu_api.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/extensions/extension_context_menu_api.h"
 
 #include <string>
 
 #include "base/values.h"
 #include "base/string_number_conversions.h"
@@ skipping 247 matching lines @@
       return false;
     }
     success = menu_manager->AddChildItem(parent_id, item.release());
   } else {
     success = menu_manager->AddContextItem(GetExtension(), item.release());
   }
 
   if (!success)
     return false;
 
+  menu_manager->SanitizeRadioButtons();
+
   return true;
 }
 
 bool UpdateContextMenuFunction::RunImpl() {
   ExtensionMenuItem::Id item_id(profile(), extension_id(), 0);
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &item_id.uid));
 
   ExtensionService* service = profile()->GetExtensionService();
   ExtensionMenuManager* manager = service->menu_manager();
   ExtensionMenuItem* item = manager->GetItemById(item_id);
@@ skipping 47 matching lines @@
   // Parent id.
   ExtensionMenuItem* parent = NULL;
   if (!GetParent(*properties, *menu_manager, &parent))
     return false;
   if (parent && !menu_manager->ChangeParent(item->id(), &parent->id()))
     return false;
 
   if (!SetURLPatterns(*properties, item))
     return false;
 
+  menu_manager->SanitizeRadioButtons();
+
   return true;
 }
 
 bool RemoveContextMenuFunction::RunImpl() {
   ExtensionMenuItem::Id id(profile(), extension_id(), 0);
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &id.uid));
   ExtensionService* service = profile()->GetExtensionService();
   ExtensionMenuManager* manager = service->menu_manager();
 
   ExtensionMenuItem* item = manager->GetItemById(id);
   // Ensure one extension can't remove another's menu items.
   if (!item || item->extension_id() != extension_id()) {
     error_ = ExtensionErrorUtils::FormatErrorMessage(
         kCannotFindItemError, base::IntToString(id.uid));
     return false;
   }
 
-  return manager->RemoveContextMenuItem(id);
+  if (manager->RemoveContextMenuItem(id)) {

[Aaron Boodman, 2011/12/15 00:43:21]

We usually prefer the opposite pattern:

if (!somethingThatCanFail())
  return false;

finalCleanupStuff();
return true;

+    manager->SanitizeRadioButtons();
+    return true;
+  }
+
+  return false;
 }
 
 bool RemoveAllContextMenusFunction::RunImpl() {
   ExtensionService* service = profile()->GetExtensionService();
   ExtensionMenuManager* manager = service->menu_manager();
   manager->RemoveAllContextItems(extension_id());
   return true;
 }