switch to new ImageGenerator API

third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp

Index: third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp b/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp
index f242a1d11733dbba50aefe10c742a6c6ea13acce..5a1acc7ac72b379ededa4592896b96f8820055ae 100644
--- a/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp
+++ b/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp
@@ -328,11 +328,11 @@ sk_sp<SkImage> DeferredImageDecoder::createFrameImageAtIndex(
       knownToBeOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType,
       m_colorSpaceForSkImages);
 
-  DecodingImageGenerator* generator = new DecodingImageGenerator(
+  auto generator = WTF::makeUnique<DecodingImageGenerator>(
       m_frameGenerator, info, std::move(segmentReader), m_allDataReceived,
       index, m_frameData[index].m_uniqueID);
-  sk_sp<SkImage> image = SkImage::MakeFromGenerator(
-      generator);  // SkImage takes ownership of the generator.
+  generator->setCanYUVDecode(m_canYUVDecode);
+  sk_sp<SkImage> image = SkImage::MakeFromGenerator(std::move(generator));
   if (!image)
     return nullptr;
 
@@ -346,8 +346,6 @@ sk_sp<SkImage> DeferredImageDecoder::createFrameImageAtIndex(
     m_frameData[index].m_uniqueID = image->uniqueID();
   }
 
-  generator->setCanYUVDecode(m_canYUVDecode);
-
   return image;
 }