exernalize imagefactory guard

cmake/example.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 "../include/core/SkCanvas.h"
 #include "../include/core/SkData.h"
 #include "../include/core/SkSurface.h"
@@ skipping 62 matching lines @@
     paint.setAntiAlias(true);
     paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kRepeat_TileMode));
 
     // Draw to the surface via its SkCanvas.
     SkCanvas* canvas = surface->getCanvas();   // We don't manage this pointer's lifetime.
     static const char* msg = "Hello world!";
     canvas->clear(SK_ColorWHITE);
     canvas->drawText(msg, strlen(msg), 90,120, paint);
 
     // Grab a snapshot of the surface as an immutable SkImage.
-    std::shared_ptr<SkImage> image = adopt(surface->newImageSnapshot());
+    sk_sp<SkImage> image = surface->makeImageSnapshot();
     // Encode that image as a .png into a blob in memory.
     std::shared_ptr<SkData> png = adopt(image->encode(SkImageEncoder::kPNG_Type, 100));
 
     // This code is no longer Skia-specific.  We just dump the .png to disk.  Any way works.
     static const char* path = "example.png";
     std::ofstream(path, std::ios::out | std::ios::binary)
         .write((const char*)png->data(), png->size());
     std::cout << "Wrote " << path << std::endl;
 
     return 0;
 }