Remove Skia's use of the default SkPicture constructor and multi-clone

src/core/SkPictureData.h

Index: src/core/SkPictureData.h
diff --git a/src/core/SkPictureData.h b/src/core/SkPictureData.h
index 15ea37b96ac57b7ce343323dc3b906dfb76afde5..6ea0b18b03c70155790bdc0ad1d4a644b6571b80 100644
--- a/src/core/SkPictureData.h
+++ b/src/core/SkPictureData.h
@@ -120,9 +120,8 @@ private:
  * enables the data to be generated once and reused for subsequent copies.
  */
 struct SkPictCopyInfo {
-    SkPictCopyInfo() : initialized(false), controller(1024) {}
+    SkPictCopyInfo() : controller(1024) {}
 
-    bool initialized;
     SkChunkFlatController controller;
     SkTDArray<SkFlatData*> paintData;
 };