Made setWholeSubtreeInvalid non-inline.

Source/core/css/analyzer/DescendantInvalidationSet.h

 /*
  * 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 60 matching lines @@
 
     // If true, all descendants might be invalidated, so a full subtree recalc is required.
     bool m_allDescendantsMightBeInvalid;
 
     // FIXME: optimize this if it becomes a memory issue.
     OwnPtr<HashSet<AtomicString> > m_classes;
     OwnPtr<HashSet<AtomicString> > m_ids;
     OwnPtr<HashSet<AtomicString> > m_tagNames;
 };
 
-inline void DescendantInvalidationSet::setWholeSubtreeInvalid()
-{
-    if (m_allDescendantsMightBeInvalid)
-        return;
-
-    m_allDescendantsMightBeInvalid = true;
-    m_classes = nullptr;
-    m_ids = nullptr;
-    m_tagNames = nullptr;
-}
-
 } // namespace WebCore
 
 #endif // DescendantInvalidationSet_h