Separate core and images project.

tools/skhello.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkCommandLineFlags.h"
 #include "SkData.h"
@@ skipping 39 matching lines @@
     SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
     SkCanvas* canvas = surface->getCanvas();
 
     canvas->drawColor(SK_ColorWHITE);
     canvas->drawText(text.c_str(), text.size(),
                      SkIntToScalar(w)/2, SkIntToScalar(h)*2/3,
                      paint);
 
     SkAutoTUnref<SkImage> image(surface->newImageSnapshot());
     SkAutoDataUnref data(image->encode());
+    if (NULL == data.get()) {
+        return -1;
+    }
     SkFILEWStream stream(path.c_str());
     return stream.write(data->data(), data->size());
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif