Simplify flattening to just write enough to call the factory

include/core/SkColorFilter.h

Index: include/core/SkColorFilter.h
diff --git a/include/core/SkColorFilter.h b/include/core/SkColorFilter.h
index 25e6bbe746bb2f7ca9b62d5349a08db989cc56f3..5ddd6af08634fabcf5e593b4031665075c38d797 100644
--- a/include/core/SkColorFilter.h
+++ b/include/core/SkColorFilter.h
@@ -135,7 +135,9 @@ public:
 
 protected:
     SkColorFilter() {}
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING

[Stephen White, 2014/07/17 21:29:00]

Nanonit: Isn't this unflattening? ;)

[reed1, 2014/07/18 13:40:29]

The flattened format is no longer "deep", in that we no longer must pass the
flattening/unflatten call-chain down the inheritance tree.

[Stephen White, 2014/07/18 14:06:20]

I misread this as "deflattening". Nix that nit.

     SkColorFilter(SkReadBuffer& rb) : INHERITED(rb) {}
+#endif
 
 private:
     typedef SkFlattenable INHERITED;