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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CSSUnsetValue_h | |
6 #define CSSUnsetValue_h | |
7 | |
8 #include "core/css/CSSValue.h" | |
9 #include "wtf/PassRefPtr.h" | |
10 | |
11 namespace blink { | |
12 | |
13 class CSSUnsetValue : public CSSValue { | |
14 public: | |
15 static PassRefPtrWillBeRawPtr<CSSUnsetValue> create() | |
16 { | |
17 return adoptRefWillBeNoop(new CSSUnsetValue); | |
18 } | |
19 | |
20 String customCSSText() const; | |
21 | |
22 bool equals(const CSSUnsetValue&) const { return true; } | |
23 | |
24 void traceAfterDispatch(Visitor* visitor) { CSSValue::traceAfterDispatch(vis
itor); } | |
25 | |
26 private: | |
27 CSSUnsetValue() | |
28 : CSSValue(UnsetClass) | |
29 { | |
30 } | |
31 }; | |
32 | |
33 DEFINE_CSS_VALUE_TYPE_CASTS(CSSUnsetValue, isUnsetValue()); | |
34 | |
35 } // namespace blink | |
36 | |
37 #endif // CSSUnsetValue_h | |
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