Change (Pass)RefPtr<SkXxx> into sk_sp<SkXxx>.

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

Index: third_party/WebKit/Source/platform/graphics/ImageBufferSurface.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/ImageBufferSurface.cpp b/third_party/WebKit/Source/platform/graphics/ImageBufferSurface.cpp
index 9826aff936a790f3a9071564af9f11bbeca9bbb7..9c21fb4a4f23a1424021930aba9d8d3d890cc278 100644
--- a/third_party/WebKit/Source/platform/graphics/ImageBufferSurface.cpp
+++ b/third_party/WebKit/Source/platform/graphics/ImageBufferSurface.cpp
@@ -50,7 +50,7 @@ ImageBufferSurface::ImageBufferSurface(const IntSize& size, OpacityMode opacityM
 
 ImageBufferSurface::~ImageBufferSurface() { }
 
-PassRefPtr<SkPicture> ImageBufferSurface::getPicture()
+sk_sp<SkPicture> ImageBufferSurface::getPicture()
 {
     return nullptr;
 }
@@ -72,11 +72,11 @@ void ImageBufferSurface::clear()
 
 void ImageBufferSurface::draw(GraphicsContext& context, const FloatRect& destRect, const FloatRect& srcRect, SkXfermode::Mode op)
 {
-    RefPtr<SkImage> snapshot = newImageSnapshot(PreferNoAcceleration, SnapshotReasonPaint);
+    sk_sp<SkImage> snapshot = newImageSnapshot(PreferNoAcceleration, SnapshotReasonPaint);
     if (!snapshot)
         return;
 
-    RefPtr<Image> image = StaticBitmapImage::create(snapshot.release());
+    RefPtr<Image> image = StaticBitmapImage::create(std::move(snapshot));
     context.drawImage(image.get(), destRect, &srcRect, op);
 }