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

src/core/SkLiteDL.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLiteDL_DEFINED
 #define SkLiteDL_DEFINED
 
@@ skipping 71 matching lines @@
 private:
     SkLiteDL(SkRect);
     ~SkLiteDL();
 
     SkRect   onGetBounds() override;
     void onDraw(SkCanvas*) override;
 
     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;
     size_t                 fReserved;
     SkRect                 fBounds;
 };
 
 #endif//SkLiteDL_DEFINED