fuzzer fixes

gm/picture.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkPaint.h"
 #include "SkPictureRecorder.h"
@@ skipping 21 matching lines @@
     paint.setXfermodeMode(SkXfermode::kPlus_Mode);
     canvas->drawRect(SkRect::MakeXYWH(25, 25, 50, 50), paint);
 
     return rec.endRecording();
 }
 
 // Exercise the optional arguments to drawPicture
 //
 class PictureGM : public skiagm::GM {
 public:
-    PictureGM() : fPicture(make_picture()) {}
+    PictureGM()
+        : fPicture(NULL)
+    {}
 
 protected:
+    virtual void onOnceBeforeDraw() {
+         fPicture.reset(make_picture());
+    }
+
     SkString onShortName() SK_OVERRIDE {
         return SkString("pictures");
     }
 
     SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(450, 120);
     }
 
     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         canvas->translate(10, 10);
@@ skipping 14 matching lines @@
         canvas->drawPicture(fPicture, &matrix, &paint);
     }
 
 private:
     SkAutoTUnref<SkPicture> fPicture;
 
     typedef skiagm::GM INHERITED;
 };
 
 DEF_GM( return SkNEW(PictureGM); )