Implement -webkit-box-reflect as a filter.

third_party/WebKit/Source/platform/graphics/GraphicsTypes.h

Index: third_party/WebKit/Source/platform/graphics/GraphicsTypes.h
diff --git a/third_party/WebKit/Source/platform/graphics/GraphicsTypes.h b/third_party/WebKit/Source/platform/graphics/GraphicsTypes.h
index 610906beff5b3223f513fb47e031ab80723bcfb8..a8cb842e6bb42384aede837d05195d6ad170f259 100644
--- a/third_party/WebKit/Source/platform/graphics/GraphicsTypes.h
+++ b/third_party/WebKit/Source/platform/graphics/GraphicsTypes.h
@@ -173,6 +173,13 @@ enum WindRule {
     RULE_EVENODD = SkPath::kEvenOdd_FillType
 };
 
+enum ReflectionDirection {
+    // Vertically flipped (to appear above or below).
+    VerticalReflection,
+    // Horizontally flipped (to appear to the left or right).
+    HorizontalReflection,
+};
+
 PLATFORM_EXPORT String compositeOperatorName(CompositeOperator, WebBlendMode);
 PLATFORM_EXPORT bool parseCompositeAndBlendOperator(const String&, CompositeOperator&, WebBlendMode&);