Use RefPtr for SkBitmap::Allocator in ImageDecoder

third_party/WebKit/Source/platform/image-decoders/ImageFrame.h

Index: third_party/WebKit/Source/platform/image-decoders/ImageFrame.h
diff --git a/third_party/WebKit/Source/platform/image-decoders/ImageFrame.h b/third_party/WebKit/Source/platform/image-decoders/ImageFrame.h
index 7a51c75e23dfa7f6aa20ba419fc6ded626c89d71..d0317a8d3f0c873fbcd0a321a2242da0208d21c5 100644
--- a/third_party/WebKit/Source/platform/image-decoders/ImageFrame.h
+++ b/third_party/WebKit/Source/platform/image-decoders/ImageFrame.h
@@ -120,7 +120,6 @@ public:
     DisposalMethod getDisposalMethod() const { return m_disposalMethod; }
     AlphaBlendSource getAlphaBlendSource() const { return m_alphaBlendSource; }
     bool premultiplyAlpha() const { return m_premultiplyAlpha; }
-    SkBitmap::Allocator* allocator() const { return m_allocator; }
     const SkBitmap& bitmap() const { return m_bitmap; }
     // Returns true if the pixels changed, but the bitmap has not yet been notified.
     bool pixelsChanged() const { return m_pixelsChanged; }
@@ -132,7 +131,7 @@ public:
     void setDisposalMethod(DisposalMethod disposalMethod) { m_disposalMethod = disposalMethod; }
     void setAlphaBlendSource(AlphaBlendSource alphaBlendSource) { m_alphaBlendSource = alphaBlendSource; }
     void setPremultiplyAlpha(bool premultiplyAlpha) { m_premultiplyAlpha = premultiplyAlpha; }
-    void setMemoryAllocator(SkBitmap::Allocator* allocator) { m_allocator = allocator; }
+    void setMemoryAllocator(PassRefPtr<SkBitmap::Allocator> allocator) { m_allocator = allocator; }
     // The pixelsChanged flag needs to be set when the raw pixel data was directly modified
     // (e.g. through a pointer or setRGBA). The flag is usually set after a batch of changes was made.
     void setPixelsChanged(bool pixelsChanged) { m_pixelsChanged = pixelsChanged; }
@@ -197,7 +196,7 @@ private:
     SkAlphaType computeAlphaType() const;
 
     SkBitmap m_bitmap;
-    SkBitmap::Allocator* m_allocator;
+    RefPtr<SkBitmap::Allocator> m_allocator;
     bool m_hasAlpha;
     // This will always just be the entire buffer except for GIF or WebP
     // frames whose original rect was smaller than the overall image size.