update callsites for Make image factories

gm/textblobmixedsizes.cpp

 /*
  * Copyright 2015 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 "Resources.h"
@@ skipping 153 matching lines @@
             }
         }
         canvas->restore();
 
 #if SK_SUPPORT_GPU
         // render offscreen buffer
         if (surface) {
             SkAutoCanvasRestore acr(inputCanvas, true);
             // since we prepended this matrix already, we blit using identity
             inputCanvas->resetMatrix();
-            SkImage* image = surface->newImageSnapshot();
-            inputCanvas->drawImage(image, 0, 0, nullptr);
-            image->unref();
+            inputCanvas->drawImage(surface->makeImageSnapshot().get(), 0, 0, nullptr);
         }
 #endif
     }
 
 private:
     SkAutoTUnref<const SkTextBlob> fBlob;
 
     static const int kWidth = 2000;
     static const int kHeight = 2000;
 
     bool fUseDFT;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new TextBlobMixedSizes(false); )
 #if SK_SUPPORT_GPU
 DEF_GM( return new TextBlobMixedSizes(true); )
 #endif
 }