Initial error handling code

include/core/SkData.h

Index: include/core/SkData.h
diff --git a/include/core/SkData.h b/include/core/SkData.h
index 6f883c884387480a305ede19bf1ff8556e5d1652..1c01f383fcb344b478b792dfd55b788ff8c6e052 100644
--- a/include/core/SkData.h
+++ b/include/core/SkData.h
@@ -21,6 +21,8 @@ struct SkFILE;
  *  to always be the same for the life of this instance.
  */
 class SK_API SkData : public SkFlattenable {
+    typedef SkFlattenable INHERITED;
+
 public:
     SK_DECLARE_INST_COUNT(SkData)
 
@@ -141,8 +143,6 @@ private:
 
     SkData(const void* ptr, size_t size, ReleaseProc, void* context);
     virtual ~SkData();
-
-    typedef SkFlattenable INHERITED;
 };
 
 /** Typedef of SkAutoTUnref<SkData> for automatically unref-ing a SkData. */