Move off SK_SUPPORT_LEGACY_DATA_FACTORIES.

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 20 matching lines @@
                      paint);
 }
 
 static bool do_surface(int w, int h, const char path[], const char text[],
                        const SkPaint& paint) {
     SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
     sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(w, h, &props));
     doDraw(surface->getCanvas(), paint, text);
 
     sk_sp<SkImage> image(surface->makeImageSnapshot());
-    SkAutoDataUnref data(image->encode());
-    if (nullptr == data.get()) {
+    sk_sp<SkData> data(image->encode());
+    if (!data) {
         return false;
     }
     SkFILEWStream stream(path);
     return stream.write(data->data(), data->size());
 }
 
 static bool do_document(int w, int h, const char path[], const char text[],
                         const SkPaint& paint) {
     sk_sp<SkDocument> doc(SkDocument::MakePDF(path));
     if (doc.get()) {
@@ skipping 49 matching lines @@
         }
     }
     return 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif