More SkPicture cleanup

src/core/SkPicturePlayback.h

Index: src/core/SkPicturePlayback.h
diff --git a/src/core/SkPicturePlayback.h b/src/core/SkPicturePlayback.h
index 9e5db08c6309ad74e6dd1039bd5cb9d9491d4c23..32d8c162a7d7d7157cda3d505634947b653cdba2 100644
--- a/src/core/SkPicturePlayback.h
+++ b/src/core/SkPicturePlayback.h
@@ -19,8 +19,8 @@ class SkPictureData;
 // The basic picture playback class replays the provided picture into a canvas.
 class SkPicturePlayback : SkNoncopyable {
 public:
-    SkPicturePlayback(const SkPicture* picture)
-        : fPictureData(picture->fData.get())
+    SkPicturePlayback(const SkPictureData* data)
+        : fPictureData(data)
         , fCurOffset(0) {
     }
     virtual ~SkPicturePlayback() { }