Refactor read and write buffers.

src/lazy/SkCachingPixelRef.h

Index: src/lazy/SkCachingPixelRef.h
diff --git a/src/lazy/SkCachingPixelRef.h b/src/lazy/SkCachingPixelRef.h
index b73a2ca443ba932ffdbd3fc953e2b6154d716ac4..9fc71c3616ec35f41eaaa1c644746042aae9763d 100644
--- a/src/lazy/SkCachingPixelRef.h
+++ b/src/lazy/SkCachingPixelRef.h
@@ -49,9 +49,9 @@ protected:
         return fImageGenerator->refEncodedData();
     }
     // No need to flatten this object. When flattening an SkBitmap,
-    // SkOrderedWriteBuffer will check the encoded data and write that
+    // SkWriteBuffer will check the encoded data and write that
     // instead.
-    // Future implementations of SkFlattenableWriteBuffer will need to
+    // Future implementations of SkWriteBuffer will need to
     // special case for onRefEncodedData as well.
     SK_DECLARE_UNFLATTENABLE_OBJECT()