Remove isInternalProperty

Source/core/css/parser/CSSPropertyParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 424 matching lines @@
 
     RefPtrWillBeRawPtr<CSSValue> value = prpValue;
     ShorthandScope scope(this, propId);
     const CSSPropertyID* longhands = shorthand.properties();
     for (unsigned i = 0; i < shorthandLength; ++i)
         addPropertyWithPrefixingVariant(longhands[i], value, important);
 }
 
 bool CSSPropertyParser::parseValue(CSSPropertyID propId, bool important)
 {
-    if (!isInternalPropertyAndValueParsingEnabledForMode(m_context.mode()) && isInternalProperty(propId))
-        return false;
-
     if (!m_valueList)
         return false;
 
     CSSParserValue* value = m_valueList->current();
 
     if (!value)
         return false;
 
     if (inViewport()) {
         // Allow @viewport rules from UA stylesheets even if the feature is disabled.
@@ skipping 8120 matching lines @@
         }
     }
 
     if (!list->length())
         return nullptr;
 
     return list.release();
 }
 
 } // namespace blink