SkPDF: SkPDFStream takes only SkStreamAsset

src/pdf/SkPDFFont.cpp

Index: src/pdf/SkPDFFont.cpp
diff --git a/src/pdf/SkPDFFont.cpp b/src/pdf/SkPDFFont.cpp
index 97be32c41da531d3ca807413ea7780bc66612576..58843f7c7d803f609f4103c0e2b93d2f61bc66e1 100644
--- a/src/pdf/SkPDFFont.cpp
+++ b/src/pdf/SkPDFFont.cpp
@@ -592,7 +592,7 @@ static size_t get_subset_font_stream(const char* fontName,
                                      const SkTDArray<uint32_t>& subset,
                                      SkPDFStream** fontStream) {
     int ttcIndex;
-    std::unique_ptr<SkStream> fontData(typeface->openStream(&ttcIndex));
+    std::unique_ptr<SkStreamAsset> fontData(typeface->openStream(&ttcIndex));
     SkASSERT(fontData);
     if (!fontData) {
         return 0;