Implement -webkit-box-reflect as a filter.

third_party/WebKit/Source/platform/graphics/filters/FEBoxReflect.h

Index: third_party/WebKit/Source/platform/graphics/filters/FEBoxReflect.h
diff --git a/third_party/WebKit/Source/platform/graphics/filters/FEBoxReflect.h b/third_party/WebKit/Source/platform/graphics/filters/FEBoxReflect.h
new file mode 100644
index 0000000000000000000000000000000000000000..00ace338847339505c73fb8f74a38d1c1fd7dd28
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/filters/FEBoxReflect.h
@@ -0,0 +1,34 @@
+// Copyright 2016 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 FEBoxReflect_h
+#define FEBoxReflect_h
+
+#include "platform/PlatformExport.h"
+#include "platform/graphics/GraphicsTypes.h"
+#include "platform/graphics/filters/FilterEffect.h"
+
+namespace blink {
+
+// Used to implement the -webkit-box-reflect property as a filter.
+class PLATFORM_EXPORT FEBoxReflect final : public FilterEffect {
+public:
+    static PassRefPtrWillBeRawPtr<FEBoxReflect> create(Filter*, ReflectionDirection, float offset);
+
+    // FilterEffect implementation
+    FloatRect mapRect(const FloatRect&, bool forward = true) final;
+    TextStream& externalRepresentation(TextStream&, int indentation) const final;
+    PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder&) final;
+
+private:
+    FEBoxReflect(Filter*, ReflectionDirection, float offset);
+    ~FEBoxReflect() final;
+
+    ReflectionDirection m_reflectionDirection;
+    float m_offset;
+};
+
+} // namespace blink
+
+#endif // FEBoxReflect_h