MultiPictureDraw is taskgroup aware.

include/core/SkMultiPictureDraw.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkMultiPictureDraw_DEFINED
 #define SkMultiPictureDraw_DEFINED
 
@@ skipping 38 matching lines @@
      */
     void draw();
 
     /**
      *  Abandon all buffered draws and reset to the initial state.
      */
     void reset();
 
 private:
     struct DrawData {
-        SkCanvas*        canvas;  // reffed
-        const SkPicture* picture; // reffed
-        SkMatrix         matrix;
-        SkPaint*         paint;   // owned
+        SkCanvas*        fCanvas;  // reffed
+        const SkPicture* fPicture; // reffed
+        SkMatrix         fMatrix;
+        SkPaint*         fPaint;   // owned
+
+        void init(SkCanvas*, const SkPicture*, const SkMatrix*, const SkPaint*);
+
+        static void Reset(SkTDArray<DrawData>&);
     };
 
-    SkTDArray<DrawData> fDrawData;
+    SkTDArray<DrawData> fThreadSafeDrawData;
+    SkTDArray<DrawData> fGPUDrawData;
 };
 
 #endif