1 files changed, 35 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/core/css/cssom/cross_thread_unsupported_value.h b/chromium/third_party/blink/renderer/core/css/cssom/cross_thread_unsupported_value.h
new file mode 100644
index 00000000000..3a3be4bc817
--- /dev/null
+++ b/chromium/third_party/blink/renderer/core/css/cssom/cross_thread_unsupported_value.h
@@ -0,0 +1,35 @@
+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CROSS_THREAD_UNSUPPORTED_VALUE_H_
+#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CROSS_THREAD_UNSUPPORTED_VALUE_H_
+
+#include "base/macros.h"
+#include "third_party/blink/renderer/core/core_export.h"
+#include "third_party/blink/renderer/core/css/css_value.h"
+#include "third_party/blink/renderer/core/css/cssom/cross_thread_style_value.h"
+#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
+
+namespace blink {
+
+class CSSStyleValue;
+
+class CORE_EXPORT CrossThreadUnsupportedValue final
+    : public CrossThreadStyleValue {
+ public:
+  explicit CrossThreadUnsupportedValue(const String& value) : value_(value) {}
+  ~CrossThreadUnsupportedValue() override = default;
+
+  CSSStyleValue* ToCSSStyleValue() override;
+
+ private:
+  friend class CrossThreadStyleValueTest;
+
+  String value_;
+  DISALLOW_COPY_AND_ASSIGN(CrossThreadUnsupportedValue);
+};
+
+}  // namespace blink
+
+#endif