remove call to deprecated preroll() -- cc manages triggering/caching decodes

third_party/WebKit/Source/core/frame/ImageBitmap.cpp

Index: third_party/WebKit/Source/core/frame/ImageBitmap.cpp
diff --git a/third_party/WebKit/Source/core/frame/ImageBitmap.cpp b/third_party/WebKit/Source/core/frame/ImageBitmap.cpp
index 7003e7b59ffa9bce99238dc88d36d2193e50ee93..c22d88d5237e4b75d3e97b54153d0f07a513683d 100644
--- a/third_party/WebKit/Source/core/frame/ImageBitmap.cpp
+++ b/third_party/WebKit/Source/core/frame/ImageBitmap.cpp
@@ -506,8 +506,6 @@ static PassRefPtr<StaticBitmapImage> cropImageAndApplyColorSpaceConversion(
     if (parsedOptions.premultiplyAlpha && imageFormat == DontPremultiplyAlpha)
       return StaticBitmapImage::create(
           unPremulSkImageToPremul(croppedSkImage.get()));
-    // Call preroll to trigger image decoding.
-    croppedSkImage->preroll();
     return StaticBitmapImage::create(std::move(croppedSkImage));
   }