Made setWholeSubtreeInvalid non-inline.

Source/core/css/analyzer/DescendantInvalidationSet.cpp

 /*
  * Copyright (C) 2014 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 103 matching lines @@
 }
 
 void DescendantInvalidationSet::getClasses(Vector<AtomicString>& classes) const
 {
     if (!m_classes)
         return;
     for (HashSet<AtomicString>::const_iterator it = m_classes->begin(); it != m_classes->end(); ++it)
         classes.append(*it);
 }
 
+void DescendantInvalidationSet::setWholeSubtreeInvalid()
+{
+    if (m_allDescendantsMightBeInvalid)
+        return;
+
+    m_allDescendantsMightBeInvalid = true;
+    m_classes = nullptr;
+    m_ids = nullptr;
+    m_tagNames = nullptr;
+}
+
 } // namespace WebCore