Clean up remaining uses of ASSERT in core

third_party/WebKit/Source/core/page/ContextMenuController.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Igalia S.L
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 156 matching lines @@
     MouseEvent* mouse_event = static_cast<MouseEvent*>(event);
     from_touch = mouse_event->FromTouch();
   }
 
   if (client_->ShowContextMenu(context_menu_.get(), from_touch) && event)
     event->SetDefaultHandled();
 }
 
 void ContextMenuController::ContextMenuItemSelected(
     const ContextMenuItem* item) {
-  ASSERT(item->GetType() == kActionType ||
+  DCHECK(item->GetType() == kActionType ||
          item->GetType() == kCheckableActionType);
 
   if (item->Action() < kContextMenuItemBaseCustomTag ||
       item->Action() > kContextMenuItemLastCustomTag)
     return;
 
   DCHECK(menu_provider_);
   menu_provider_->ContextMenuItemSelected(item);
 }
 
 }  // namespace blink