Debugging statements to investigate a bug.

src/core/SkOrderedReadBuffer.h

Index: src/core/SkOrderedReadBuffer.h
diff --git a/src/core/SkOrderedReadBuffer.h b/src/core/SkOrderedReadBuffer.h
index 3ec76d91c42866f5dd31771ced72a2a4080e95cb..556fce8b41495a4790bf48074dcb3ed951611439 100644
--- a/src/core/SkOrderedReadBuffer.h
+++ b/src/core/SkOrderedReadBuffer.h
@@ -18,6 +18,10 @@
 
 class SkBitmap;
 
+#if defined(SK_DEBUG) && defined(SK_BUILD_FOR_MAC)
+    #define DEBUG_NON_DETERMINISTIC_ASSERT
+#endif
+
 class SkOrderedReadBuffer : public SkFlattenableReadBuffer {
 public:
     SkOrderedReadBuffer();
@@ -122,6 +126,12 @@ private:
 
     SkPicture::InstallPixelRefProc fBitmapDecoder;
 
+#ifdef DEBUG_NON_DETERMINISTIC_ASSERT
+    // Debugging counter to keep track of how many bitmaps we
+    // have decoded.
+    int fDecodedBitmapIndex;
+#endif // DEBUG_NON_DETERMINISTIC_ASSERT
+
     typedef SkFlattenableReadBuffer INHERITED;
 };