Revert of Delete SkFlattenable::Type

src/core/SkReadBuffer.cpp

Index: src/core/SkReadBuffer.cpp
diff --git a/src/core/SkReadBuffer.cpp b/src/core/SkReadBuffer.cpp
index d57b2237002625a6f04dcd8230920be110f09b04..f220b5a9e61581b35772b5514c1c6fd307e56d8d 100644
--- a/src/core/SkReadBuffer.cpp
+++ b/src/core/SkReadBuffer.cpp
@@ -329,7 +329,11 @@
     }
 }
 
-SkFlattenable* SkReadBuffer::readFlattenable() {
+SkFlattenable* SkReadBuffer::readFlattenable(SkFlattenable::Type ft) {
+    //
+    // TODO: confirm that ft matches the factory we decide to use
+    //
+
     SkFlattenable::Factory factory = nullptr;
 
     if (fFactoryCount > 0) {