RELEASE_ASSERT -> CHECK and ASSERT -> DCHECK in web.

third_party/WebKit/Source/web/WebDataSourceImpl.cpp

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 120 matching lines @@
 }
 
 WebDataSourceImpl::WebDataSourceImpl(LocalFrame* frame, const ResourceRequest& request, const SubstituteData& data)
     : DocumentLoader(frame, request, data)
 {
 }
 
 WebDataSourceImpl::~WebDataSourceImpl()
 {
     // Verify that detachFromFrame() has been called.
-    ASSERT(!m_extraData);
+    DCHECK(!m_extraData);
 }
 
 void WebDataSourceImpl::detachFromFrame()
 {
     RawPtr<DocumentLoader> protect(this);
 
     DocumentLoader::detachFromFrame();
     m_extraData.clear();
 }
 
 DEFINE_TRACE(WebDataSourceImpl)
 {
     DocumentLoader::trace(visitor);
 }
 
 } // namespace blink