switched SkSL interpreter over to threaded code

Bug: skia:
Change-Id: I2a7b772a874aa920b8509214c25e874020c896ce
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/238962
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
diff --git a/src/sksl/SkSLByteCodeGenerator.h b/src/sksl/SkSLByteCodeGenerator.h
index 5ba4b57..e562970 100644
--- a/src/sksl/SkSLByteCodeGenerator.h
+++ b/src/sksl/SkSLByteCodeGenerator.h
@@ -94,7 +94,7 @@
      * Based on 'type', writes the s (signed), u (unsigned), or f (float) instruction.
      */
     void writeTypedInstruction(const Type& type, ByteCodeInstruction s, ByteCodeInstruction u,
-                               ByteCodeInstruction f, int count);
+                               ByteCodeInstruction f, int count, bool writeCount = true);
 
     static int SlotCount(const Type& type);