className should be allowed to be a whitespace-only string

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 Apple Inc. All rights reserved.
  *
  * 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 67 matching lines @@
     TabIndexWasSetExplicitly = 1 << 0,
     StyleAffectedByEmpty = 1 << 1,
     IsInCanvasSubtree = 1 << 2,
     ContainsFullScreenElement = 1 << 3,
     IsInTopLayer = 1 << 4,
     HasPendingResources = 1 << 5,
 
     NumberOfElementFlags = 6, // Required size of bitfield used to store the flags.
 };
 
+
+enum ClassStringContent {

[tkent, 2015/10/16 05:40:32]

Please use |enum class| instead of |enum|, and move this to Element.cpp.

[tanay.c, 2015/10/16 07:17:36]

Done.

+    Empty,
+    WhiteSpaceOnly,
+    HasClasses
+};
+
 enum class ShadowRootType;
 
 typedef WillBeHeapVector<RefPtrWillBeMember<Attr>> AttrNodeList;
 
 class CORE_EXPORT Element : public ContainerNode {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<Element> create(const QualifiedName&, Document*);
     ~Element() override;
 
@@ skipping 805 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif // Element_h