switch to new ImageGenerator API

third_party/WebKit/Source/platform/exported/WebImageGenerator.cpp

 /*
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "public/platform/WebImageGenerator.h"
 
 #include "platform/graphics/DecodingImageGenerator.h"
 
 namespace blink {
 
-SkImageGenerator* WebImageGenerator::create(SkData* data) {
-  return DecodingImageGenerator::create(data);
+std::unique_ptr<SkImageGenerator> WebImageGenerator::create(
+    sk_sp<SkData> data) {
+  return std::unique_ptr<SkImageGenerator>(
+      DecodingImageGenerator::create(data.get()));
 }
 
 }  // namespace blink