Initial error handling code

include/core/SkDrawLooper.h

Index: include/core/SkDrawLooper.h
diff --git a/include/core/SkDrawLooper.h b/include/core/SkDrawLooper.h
index 2faf28b39953ca3e6f228cdaa8913642c54d994a..2bb9e0d4cd03922b275fdff5ad9a98b20f48f929 100644
--- a/include/core/SkDrawLooper.h
+++ b/include/core/SkDrawLooper.h
@@ -26,6 +26,8 @@ class SkString;
     like shadows or frame/fills, that require more than one pass.
 */
 class SK_API SkDrawLooper : public SkFlattenable {
+    typedef SkFlattenable INHERITED;
+
 public:
     SK_DECLARE_INST_COUNT(SkDrawLooper)
 
@@ -64,13 +66,11 @@ public:
                                    const SkRect& src, SkRect* dst);
 
     SkDEVCODE(virtual void toString(SkString* str) const = 0;)
+    SK_DEFINE_FLATTENABLE_TYPE(SkDrawLooper)
 
 protected:
     SkDrawLooper() {}
     SkDrawLooper(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
-
-private:
-    typedef SkFlattenable INHERITED;
 };
 
 #endif