Apply styles to mathML elements having class attribute.

third_party/WebKit/Source/core/dom/Node.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2011, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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
@@ skipping 260 matching lines @@
     void setV0CustomElementState(V0CustomElementState newState);
 
     virtual bool isMediaControlElement() const { return false; }
     virtual bool isMediaControls() const { return false; }
     virtual bool isTextTrackContainer() const { return false; }
     virtual bool isVTTElement() const { return false; }
     virtual bool isAttributeNode() const { return false; }
     virtual bool isCharacterDataNode() const { return false; }
     virtual bool isFrameOwnerElement() const { return false; }
 
-    // StyledElements allow inline style (style="border: 1px"), presentational attributes (ex. color),
-    // class names (ex. class="foo bar") and other non-basic styling features. They and also control
-    // if this element can participate in style sharing.
-    //
-    // FIXME: The only things that ever go through StyleResolver that aren't StyledElements are
-    // PseudoElements and VTTElements. It's possible we can just eliminate all the checks
-    // since those elements will never have class names, inline style, or other things that
-    // this apparently guards against.
-    bool isStyledElement() const { return isHTMLElement() || isSVGElement(); }
+    bool isStyledElement() const;
 
     bool isDocumentNode() const;
     bool isTreeScope() const;
     bool isDocumentFragment() const { return getFlag(IsDocumentFragmentFlag); }
     bool isShadowRoot() const { return isDocumentFragment() && isTreeScope(); }
     bool isInsertionPoint() const { return getFlag(IsInsertionPointFlag); }
 
     bool canParticipateInFlatTree() const;
     bool isSlotOrActiveInsertionPoint() const;
     // A re-distribution across v0 and v1 shadow trees is not supported.
@@ skipping 590 matching lines @@
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const blink::Node*);
 void showTree(const blink::Node*);
 void showNodePath(const blink::Node*);
 #endif
 
 #endif // Node_h