add serialization to SkLayerRasterizer



git-svn-id: http://skia.googlecode.com/svn/trunk@2088 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/SkLayerRasterizer.cpp b/src/effects/SkLayerRasterizer.cpp
index 86eeccd..5a7be9d 100644
--- a/src/effects/SkLayerRasterizer.cpp
+++ b/src/effects/SkLayerRasterizer.cpp
@@ -223,3 +223,6 @@
     return CreateProc;
 }
 
+static SkFlattenable::Registrar gReg("SkLayerRasterizer",
+                                     SkLayerRasterizer::CreateProc);
+