Revert "CSS: Drop the quirks-mode exception for CSS MIME types."

Source/core/dom/ProcessingInstruction.cpp

 /*
  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006, 2008, 2009 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 207 matching lines @@
     RefPtrWillBeRawPtr<CSSStyleSheet> cssSheet = CSSStyleSheet::create(newSheet, this);
     cssSheet->setDisabled(m_alternate);
     cssSheet->setTitle(m_title);
     cssSheet->setMediaQueries(MediaQuerySet::create(m_media));
 
     m_sheet = cssSheet.release();
 
     // We don't need the cross-origin security check here because we are
     // getting the sheet text in "strict" mode. This enforces a valid CSS MIME
     // type.
-    parseStyleSheet(sheet->sheetText());
+    parseStyleSheet(sheet->sheetText(true));
 }
 
 void ProcessingInstruction::setXSLStyleSheet(const String& href, const KURL& baseURL, const String& sheet)
 {
     if (!inDocument()) {
         ASSERT(!m_sheet);
         return;
     }
 
     ASSERT(m_isXSL);
@@ skipping 76 matching lines @@
     m_sheet.release()->clearOwnerNode();
 }
 
 void ProcessingInstruction::trace(Visitor* visitor)
 {
     visitor->trace(m_sheet);
     CharacterData::trace(visitor);
 }
 
 } // namespace