force readbuffer clients to use specialized readFoo for flattenables

src/core/SkData.cpp

Index: src/core/SkData.cpp
diff --git a/src/core/SkData.cpp b/src/core/SkData.cpp
index a1b42b0c4f971b08a17f411b0af4a943b5b926c9..6b9b56be1725ffb2b252100c4be2602c3f6141d0 100644
--- a/src/core/SkData.cpp
+++ b/src/core/SkData.cpp
@@ -320,7 +320,7 @@ SkDataSet::SkDataSet(SkFlattenableReadBuffer& buffer) {
         for (int i = 0; i < fCount; ++i) {
             fPairs[i].fKey = keyStorage;
             keyStorage += strlen(keyStorage) + 1;
-            fPairs[i].fValue = buffer.readFlattenableT<SkData>();
+            fPairs[i].fValue = buffer.readData();
         }
     } else {
         fKeySize = 0;