Replace ASSERT*() with DCHECK*() in core/xml/.

third_party/WebKit/Source/core/xml/XSLImportRule.cpp

 /*
  * This file is part of the XSL implementation.
  *
  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 82 matching lines @@
             return;
     }
 
     ResourceLoaderOptions fetchOptions(ResourceFetcher::defaultResourceOptions());
     FetchRequest request(ResourceRequest(ownerDocument->completeURL(absHref)), FetchInitiatorTypeNames::xml, fetchOptions);
     request.setOriginRestriction(FetchRequest::RestrictToSameOrigin);
     XSLStyleSheetResource* resource = XSLStyleSheetResource::fetchSynchronously(request, ownerDocument->fetcher());
     if (!resource || !resource->sheet())
         return;
 
-    ASSERT(!m_styleSheet);
+    DCHECK(!m_styleSheet);
     setXSLStyleSheet(absHref, resource->response().url(), resource->sheet());
 }
 
 DEFINE_TRACE(XSLImportRule)
 {
     visitor->trace(m_parentStyleSheet);
     visitor->trace(m_styleSheet);
 }
 
 } // namespace blink