If we swap its arguments, SkTaskGroup::batch() _is_ sk_parallel_for.

bench/SkGlyphCacheBench.cpp

Index: bench/SkGlyphCacheBench.cpp
diff --git a/bench/SkGlyphCacheBench.cpp b/bench/SkGlyphCacheBench.cpp
index c99b5728fd305e2d5afbb633b90a92216fcac905..2e0429fce34a3babd0b9ed055b6f58f3f223eca6 100644
--- a/bench/SkGlyphCacheBench.cpp
+++ b/bench/SkGlyphCacheBench.cpp
@@ -95,7 +95,7 @@ protected:
              sk_tool_utils::create_portable_typeface("sans-serif", SkTypeface::kItalic)};
 
         for (int work = 0; work < loops; work++) {
-            sk_parallel_for(16, [&](int threadIndex) {
+            SkTaskGroup().batch(16, [&](int threadIndex) {
                 SkPaint paint;
                 paint.setAntiAlias(true);
                 paint.setSubpixelText(true);