Fix CSS reference filters with negative transformed children.

third_party/WebKit/public/platform/WebLayer.h

Index: third_party/WebKit/public/platform/WebLayer.h
diff --git a/third_party/WebKit/public/platform/WebLayer.h b/third_party/WebKit/public/platform/WebLayer.h
index 82221415c16d2689f25a50a29fc8b364bee0dfc0..340b05e64dfb2a50de9049766441aebfceeadce5 100644
--- a/third_party/WebKit/public/platform/WebLayer.h
+++ b/third_party/WebKit/public/platform/WebLayer.h
@@ -31,6 +31,7 @@
 #include "WebCommon.h"
 #include "WebDoublePoint.h"
 #include "WebFloatPoint3D.h"
+#include "WebFloatSize.h"
 #include "WebPoint.h"
 #include "WebRect.h"
 #include "WebSize.h"
@@ -135,6 +136,9 @@ public:
     // FilterOperations object.
     virtual void setFilters(const cc::FilterOperations&) = 0;
 
+    // The position of the original primitive inside the total bounds.
+    virtual void setFiltersOrigin(const WebFloatPoint&) = 0;
+
     // Clear the background filters in use by passing in a newly instantiated
     // FilterOperations object.
     // TODO(loyso): This should use CompositorFilterOperation. crbug.com/584551