Make CSSParserMode parameter not optional for MutableStylePropertySet::create()

Source/core/editing/commands/ApplyStyleCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2008, 2009 Apple 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 286 matching lines @@
         return;
     EphemeralRange endEphemeralRange = PlainTextRange(endIndex).createRangeForSelection(toContainerNode(scope));
     if (endEphemeralRange.isNull())
         return;
     updateStartEnd(startEphemeralRange.startPosition(), endEphemeralRange.startPosition());
 }
 
 static PassRefPtrWillBeRawPtr<MutableStylePropertySet> copyStyleOrCreateEmpty(const StylePropertySet* style)
 {
     if (!style)
-        return MutableStylePropertySet::create();
+        return MutableStylePropertySet::create(HTMLQuirksMode);
     return style->mutableCopy();
 }
 
 void ApplyStyleCommand::applyRelativeFontStyleChange(EditingStyle* style)
 {
     static const float MinimumFontSize = 0.1f;
 
     if (!style || !style->hasFontSizeDelta())
         return;
 
@@ skipping 1276 matching lines @@
 DEFINE_TRACE(ApplyStyleCommand)
 {
     visitor->trace(m_style);
     visitor->trace(m_start);
     visitor->trace(m_end);
     visitor->trace(m_styledInlineElement);
     CompositeEditCommand::trace(visitor);
 }
 
 }