Initial error handling code

gm/imagefiltersbase.cpp

Index: gm/imagefiltersbase.cpp
diff --git a/gm/imagefiltersbase.cpp b/gm/imagefiltersbase.cpp
index ca45eafe9349dec8dfd05878dcdecaa0aa7af066..2c8fceb1461ed9dcae892dfe9da9523412c87a94 100644
--- a/gm/imagefiltersbase.cpp
+++ b/gm/imagefiltersbase.cpp
@@ -35,7 +35,8 @@ private:
 
 // register the filter with the flattenable registry
 static SkFlattenable::Registrar gFailImageFilterReg("FailImageFilter",
-                                                    FailImageFilter::CreateProc);
+                                                    FailImageFilter::CreateProc,
+                                                    FailImageFilter::GetFlattenableType());
 
 class IdentityImageFilter : public SkImageFilter {
 public:
@@ -57,7 +58,8 @@ private:
 
 // register the filter with the flattenable registry
 static SkFlattenable::Registrar gIdentityImageFilterReg("IdentityImageFilter",
-                                                        IdentityImageFilter::CreateProc);
+                                                        IdentityImageFilter::CreateProc,
+                                                        IdentityImageFilter::GetFlattenableType());
 
 
 ///////////////////////////////////////////////////////////////////////////////