SkLiteDL: thread the original canvas matrix through for SetMatrix::Draw().

src/core/SkLiteDL.h

Index: src/core/SkLiteDL.h
diff --git a/src/core/SkLiteDL.h b/src/core/SkLiteDL.h
index ac1eb9f782880dfbb92b15dd6457f3ef09ef2afc..d53c8de1512cc553f5fcb77c6ba20fdb475cf2c9 100644
--- a/src/core/SkLiteDL.h
+++ b/src/core/SkLiteDL.h
@@ -89,8 +89,8 @@ private:
     template <typename T, typename... Args>
     void* push(size_t, Args&&...);
 
-    template <typename... Args>
-    void map(void (*const [])(void*, Args...), Args...);
+    template <typename Fn, typename... Args>
+    void map(const Fn[], Args...);
 
     SkAutoTMalloc<uint8_t> fBytes;
     size_t                 fUsed;