Initial error handling code

include/core/SkMallocPixelRef.h

Index: include/core/SkMallocPixelRef.h
diff --git a/include/core/SkMallocPixelRef.h b/include/core/SkMallocPixelRef.h
index 2241a513e7ea223ac8ddeac340bf8f73ee92d2ca..1d199bcefc81c7b06db687c4d8f40e7b0ef8ab1b 100644
--- a/include/core/SkMallocPixelRef.h
+++ b/include/core/SkMallocPixelRef.h
@@ -16,6 +16,8 @@
     so that we can freely assign memory allocated by one class to the other.
 */
 class SkMallocPixelRef : public SkPixelRef {
+    typedef SkPixelRef INHERITED;
+
 public:
     /** Allocate the specified buffer for pixels. The memory is freed when the
         last owner of this pixelref is gone. If addr is NULL, sk_malloc_throw()
@@ -43,8 +45,6 @@ private:
     size_t          fSize;
     SkColorTable*   fCTable;
     bool            fOwnPixels;
-
-    typedef SkPixelRef INHERITED;
 };