DCHECK that the document url is valid in HTMLPreloadScanner

third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009 Torch Mobile, Inc. http://www.torchmobile.com/
  * Copyright (C) 2010 Google Inc. All Rights Reserved.
  *
  * 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.
@@ skipping 485 matching lines @@
 TokenPreloadScanner::TokenPreloadScanner(const KURL& documentURL, std::unique_ptr<CachedDocumentParameters> documentParameters, const MediaValuesCached::MediaValuesCachedData& mediaValuesCachedData)
     : m_documentURL(documentURL)
     , m_inStyle(false)
     , m_inPicture(false)
     , m_inScript(false)
     , m_templateCount(0)
     , m_documentParameters(std::move(documentParameters))
     , m_mediaValues(MediaValuesCached::create(mediaValuesCachedData))
     , m_didRewind(false)
 {
-    ASSERT(m_documentParameters.get());
-    ASSERT(m_mediaValues.get());
+    DCHECK(m_documentParameters.get());
+    DCHECK(m_mediaValues.get());
+    DCHECK(documentURL.isValid());
     m_cssScanner.setReferrerPolicy(m_documentParameters->referrerPolicy);
 }
 
 TokenPreloadScanner::~TokenPreloadScanner()
 {
 }
 
 TokenPreloadScannerCheckpoint TokenPreloadScanner::createCheckpoint()
 {
     TokenPreloadScannerCheckpoint checkpoint = m_checkpoints.size();
@@ skipping 293 matching lines @@
     ASSERT(document);
     doHtmlPreloadScanning = !document->settings() || document->settings()->doHtmlPreloadScanning();
     doDocumentWritePreloadScanning = doHtmlPreloadScanning && document->frame() && document->frame()->isMainFrame();
     defaultViewportMinWidth = document->viewportDefaultMinWidth();
     viewportMetaZeroValuesQuirk = document->settings() && document->settings()->viewportMetaZeroValuesQuirk();
     viewportMetaEnabled = document->settings() && document->settings()->viewportMetaEnabled();
     referrerPolicy = document->getReferrerPolicy();
 }
 
 } // namespace blink