Use sk_sp<SkBitmap::Allocator> instead of raw pointers or WTF::RefPtr<T>.

third_party/WebKit/Source/platform/graphics/ImageFrameGenerator.h

Index: third_party/WebKit/Source/platform/graphics/ImageFrameGenerator.h
diff --git a/third_party/WebKit/Source/platform/graphics/ImageFrameGenerator.h b/third_party/WebKit/Source/platform/graphics/ImageFrameGenerator.h
index 37685411845ad3f5a1b3219ba77a136fd7886455..012c6a51fa85e8542ccbcb08355529496ce0b67f 100644
--- a/third_party/WebKit/Source/platform/graphics/ImageFrameGenerator.h
+++ b/third_party/WebKit/Source/platform/graphics/ImageFrameGenerator.h
@@ -99,9 +99,9 @@ private:
 
     void setHasAlpha(size_t index, bool hasAlpha);
 
-    SkBitmap tryToResumeDecode(SegmentReader*, bool allDataReceived, size_t index, const SkISize& scaledSize, SkBitmap::Allocator*);
+    SkBitmap tryToResumeDecode(SegmentReader*, bool allDataReceived, size_t index, const SkISize& scaledSize, sk_sp<SkBitmap::Allocator>);
     // This method should only be called while m_decodeMutex is locked.
-    bool decode(SegmentReader*, bool allDataReceived, size_t index, ImageDecoder**, SkBitmap*, SkBitmap::Allocator*);
+    bool decode(SegmentReader*, bool allDataReceived, size_t index, ImageDecoder**, SkBitmap*, sk_sp<SkBitmap::Allocator>);
 
     const SkISize m_fullSize;