slice 109 Source/core/fileapi/Blob.cpp PassRefPtrWillBeRawPtr<Blob> Blob::slice(long long start, long long end, const String& contentType, ExceptionState& exceptionState) const slice 186 Source/core/fileapi/File.cpp PassRefPtrWillBeRawPtr<Blob> File::slice(long long start, long long end, const String& contentType, ExceptionState& exceptionState) const